Communication

Computer & Communication Tools Lesson II

noreply@blogger.com (Mr Hmada Zidan) — Wed, 10 Feb 2010 02:29:00 +0200

Cell phones/Mobile Phones

The cell phone, also called a mobile phone, is used for mobile communications over a cellular network of cell sites. There are numerous plans and carriers. Many carriers have plans tailored for small businesses including options that bundle popular features and usage patterns, making them very cost effective. Be sure to ask questions about your specific needs before selecting a carrier and a plan

When your usage or needs change, do not hesitate to request information on plans that more closely meet your new set of requirements. Most cell phone companies allow you to return the phone within 15 to 30 days after activation if you are not happy. Use this time to check if the cell phone has acceptable reception at your home and work place. Basic cell phones are offered free by many carriers for a specific length of time, usually two years. But be aware there are hefty fees for canceling early.

Smartphones

Growth in demand for advanced mobile devices boasting powerful memory, larger screens and open operating systems has outpaced the rest of the mobile phone market for several years. A smartphone is a cell phone offering advanced capabilities with computer-like functionality. A smartphone can incorporate advanced features like e-mail, Internet and e-book reader capabilities and include a full keyboard or an external keyboard. In other words, a smartphone is a miniature computer that has phone capability.

Smartphones are also capable of text messaging and may include a camera and video recorder. Some models are capable of "Push to Talk" which is a feature similar to a walkie-talkie. Outside your office a smartphone can become a valuable tool for e-mail, web browsing and the ability to review and edit documents. Several models have global positioning system (GPS) capability and many other available applications. The most popular are the iPhone, Blackberry, Droid and Google's Nexus One. Each has different strengths you will need to factor into your business needs.

Video and Web Conferencing

Video conferencing transmits and receives images and voice in real-time. Web conferencing adds another dimension – it allows you to share documents and applications.

Telepresence takes video and web conferencing to new levels. A telepresence conference room includes ultra-high-definition video cameras, large screens displaying life-size images, and spatially discrete audio to create an "in person" experience. Facial expressions for crucial business discussions and negotiations can be discerned across the "virtual table." Telepresence solutions can be deployed to support your business’ need from one-on-one conferencing in private offices to stadium seating for larger meetings.

All these solutions allow you to communicate as if you were face-to-face with customers anywhere in the world. Time and money that would be spent on traveling can be used to conduct meetings. You can share documents, make presentations and conduct meetings on short notice. For example, without leaving your office you can collaborate with employees who work from home or from other company locations. You can get detailed information on video and web conferencing at: www.google.com and www.wikipedia.org. At My Own Business, we use www.WebEx.com conferencing solution from Cisco Systems, Inc.

Social networking sites

A social network is a social structure made of individuals or organizations that are tied together by common interests, often like a community. Internet-based social networking occurs through a variety of websites that allow users to share content and interact around similar interests. It has expanded to include a company's customers, celebrity's fans and a politician's constituents. This has created a great opportunity for businesses to generate interaction with present and potential customers through Web-based sites established for that purpose. To be successful requires a steady effort and participation over time. With an ongoing commitment of effort you can create a niche market through sites such as MySpace, Facebook and Twitter. A note of caution on Internet social networking: once you put something out there it's hard to take it back, so you have to be careful.

Online chat tools

Wikipedia describes chat tools best: "Online chat can refer to any kind of communication over the Internet, but is primarily meant to refer to direct one-on-one chat or text-based group chat using tools such as instant messengers." It is commonly used in place of email when there is a need to communicate live. Chat tools can be used both for internal and external communication and can be placed on a website so customers can talk to a customer service person in real-time. Utilizing chat tools usually requires a free software download. There are many options available including AOL, GoogleTalk and Yahoo IM. Features can vary from simple one-on-one messaging to highly developed tools for group chat, file transfers, video and document collaboration such as WebExConnect.

Fax Machines

The decision must be made as to whether to buy a stand alone fax machine or an "all-in-one" model. All-in-ones function as a printer, scanner, copier and fax. (Not all models have the fax or scanner capability). If you plan on sending and receiving lots of faxes you might consider the stand alone. For less frequent use the all-in-one can cost less. They are also compact and more energy efficient. Consideration should be given to your budget and your space constraints. Generally, the simpler the machine, the less problems you will have with it. If your business will rely heavily on faxing, it is important to get as much memory as possible to speed up the printing of documents.

Some phone vendors can provide you with a fax number that works with your e-mail system. Receiving a fax works just like it does when the fax is being received by another machine but you receive it as an attachment to an e-mail. This can be very handy for those who travel on a frequent basis and are not always near a fax machine. Here are tips:

Use a cover page that is appropriate for your company. Remember, this is an external communication that reflects your business and your image.
Use a separate dedicated phone line for your fax machine.

Computer & Communication Tools

noreply@blogger.com (Mr Hmada Zidan) — Mon, 8 Feb 2010 05:05:00 +0200

Types of Communication
Communication is key to any business success. Unless potential clients and customers are
aware of your business, they will not have the information to contact you or to purchase your products. When they are aware of your business, they must be able to contact it easily.

Two types of communication are essential - external and internal.

External communication reaches out to the customer to make him or her aware of your product or service and to give the customer a reason to buy. This type of communication includes your brochures, various forms of advertising, contact letters, telephone calls, Web sites and anything else that makes the public aware of what you do.

Image is extremely important in external communication! Your logo should represent who you are; your letterhead should be a selling tool; your telephone message should reflect your professionalism.
Internal communication is essential to attracting and retaining a talented staff. You must provide the direction for the company by consistently communicating that message; you must motivate your staff through various forms of communication, which can include awards, newsletters, meetings, telephone calls and formal and informal discussions.

Effective communication requires tools and planning. In this session, we will discuss those tools, as well as planning guidelines, to facilitate this key element of your business, communication. The following discussion will be grouped into:

Basic communication tools
Computers
The Internet

Basic Communication Tools

Specific tools that can be used for communication include landline telephones, cell phones, smartphones and fax machines. The lines between the devices are blurring. For example an advanced cell phone (the smartphone) can contain many of the functions of a computer including Internet, email, faxing, word processing and more. For this discussion, each device will be presented as a separate entity.

Landline Telephones

There are many types of telephones, and only you can decide which type(s) or combinations of types are right for you. Even the standard telephone (landline) that is installed in your office has many options. You should start with at least one line that is unique to your business. This line should have the capability to take messages in case it is not answered personally. Here are some telephone tips:

It is important to treat the telephone as an important business tool. Record a voice mail message that indicates when you will return the call and then continually check your voice mail to return calls promptly.
Have a separate line for your business phone and your personal phone. Don't have family members pick up or use the business phone. Get any required extra telephone lines installed before you start.
A remote (voice mail) answering system is usually more desirable than using an answering machine. Voice mail is reliable, reasonable in cost, accessible from anywhere and projects a more business-like image.
The need for an 800 number is becoming less important because long-distance rates are much more affordable.
Consider using either a wireless or corded headset for both landline phones and cell phones. It is clearer, safer and you can move about with free arms.
When leaving phone messages, clearly state your name and phone number at the beginning and the end of the message.
Be polite in cell phone use! Good business courtesy includes avoiding being interrupted by telephone calls when in a meeting or during a business lunch.

Microsoft DirectX 9.28.1886 (February 2010)

noreply@blogger.com (Mr Hmada Zidan) — Sun, 7 Feb 2010 19:50:00 +0200

Microsoft DirectX 9.28.1886 (February 2010)

Microsoft DirectX is a group of technologies designed to make Windows-based computers an ideal platform for running and displaying applications rich in multimedia elements such as full-color graphics, video, 3D animation, and rich audio.

DirectX 9.0 includes security and performance updates, along with many new features across all technologies, which can be accessed by applications using the DirectX 9.0 APIs. It is required by almost all PC games and 3D applications.
Download : Microsoft DirectX 9.28.1886 (February 2010) Size : 104MB

TuneUp Utilities 2010 9.0.3100.16

noreply@blogger.com (Mr Hmada Zidan) — Thu, 4 Feb 2010 19:48:00 +0200

TuneUp Utilities can make your Windows operating system faster, more comfortable and more secure with just a few mouse clicks. And all operations performed on the operating system are completely safe, because all changes are monitored by TuneUp Rescue Center and can be undone at any time. All TuneUp Utilities modules can be accessed through a common interface that is divided into six categories.

The software helps both beginners and experts to make Windows meet their needs in a way that is better, easier and safer. All important system options are explained in an easy way and can be turned on or off at the click of your mouse. TuneUp Utilities will then make the necessary changes in the registry or boot files automatically. We place a high value on system stability, so that Windows won't stop working reliably. And most changes that you make can be undone in TuneUp Rescue Center - easily and safely.

TuneUp Utilities automatically runs important maintenance tasks for you, makes you aware of any problems and offers simple solutions. This ensures performance is always at its best. A slow and untidy computer is now a thing of the past for you. You can also use TuneUp Utilities to customize the appearance of your Windows system - to make working on your computer more enjoyable.

With TuneUp Utilities you will quickly make your Windows system faster and more convenient to use- and ensure that it stays like this for the long term. This makes TuneUp Utilities the perfect program for everyone: for those who would rather leave the computer maintenance to a reliable partner as well as for those who would rather do everything themselves.

The TuneUp Turbo Mode provides an immediate performance boost whenever you need it. When you use your computer in the TuneUp Turbo Mode, an analysis is performed to see which tasks, programs and functions are currently running in the background that are not strictly necessary. These programs are stopped or slowed down, allowing the additional processing power gained to be used exclusively by the programs you are actually running.

DownLoad : TuneUp Utilities 2010 9.0.3100.16

avast! Internet Security 5.0.396 Final

noreply@blogger.com (Mr Hmada Zidan) — Sun, 31 Jan 2010 02:35:00 +0200

avast! Internet Security 5.0.396 Final

avast! provides a package of applications that aim to protect your computer from a possible virus infection or other malware threat. If you use it correctly, and in combination with other programs such as data backup utilities, it will significantly reduce the risk of your computer being attacked or infected by a virus, and thus the risk of losing important or private data.

The

Avast! Internet Security application comes with an antispam filter and built-in firewall. Once installed, avast! runs silently in the background to protect your computer against all known forms of malware. You don't need to do anything else - just install and forget! Active internet users need greater protection for themselves as they shop and bank on-line. To secure against threats from infected web sites and the growing risk of identity theft, avast Internet security provides you with continuous protection from its layers of antivirus, anti-spyware, anti-rootkit protection, firewall and antispam.

Download : avast! Internet Security 5.0.396 Final size : 44 MB

Google Chrome 5.0.307.1

noreply@blogger.com (Mr Hmada Zidan) — Sun, 31 Jan 2010 02:26:00 +0200

Google Chrome 5.0.307.1

Google Chrome is a browser that combines a minimal design with sophisticated technology to make the web faster, safer, and easier.

Google Chrome also uses a brand new javascript engine (V8), which is much faster than existing javascript interpreters. This means you can create more complex and more intensive AJAX applications with fewer speed and processing constraints. Finally, Google Chrome is built on top of WebKit, so Google Chrome users will benefit from the CSS3 features being added to WebKit as those features are released.

Download : Google Chrome 5.0.307.1 Size : 12 MB

Egypt.Vs.Algeria.4.0

noreply@blogger.com (Mr Hmada Zidan) — Fri, 29 Jan 2010 01:50:00 +0200

Egypt.Vs.Algeria.4.0

to Download goals
from here

I Love U Egypt

AnyDVD & AnyDVD HD 6.6.1.4 Beta

noreply@blogger.com (Mr Hmada Zidan) — Mon, 25 Jan 2010 17:55:00 +0200

AnyDVD & AnyDVD HD 6.6.1.4 Beta

AnyDVD HD comes with same functionality as AnyDVD, but with additional features for full Blu-ray Disc and HD DVD support, including decryption of Blu-ray (BD+ and AACS) and HD DVD (AACS) movies.

Allows you to watch movies over a digital display connection, without HDCP-compliant graphics card and without HDCP-compliant display. No need to buy an expensive monitor. Sweet!

Playback your discs on your PC with PowerDVD Ultra, which otherwise do not run (titles released by Studio Canal, The Weinstein Company, Kinowelt, Optimum Releasing).

AnyDVD HD is the "must have" utility for the serious home theater enthusiast using a media center / home theater PC.

Another amazing feature of AnyDVD HD is "magic file replacement™". Remaster any commercial movie disc using simple XML scripts. These scripts will "magically" replace the files on the physical disc. You can customize discs as you like without even making a copy to harddisk!

AnyDVD comes with its own UDF 2.5 file ripper, no need to install 3rd party UDF 2.5 filesystem under Windows XP.

Changes in version 6.6.1.4, 2010 01 23:
* New (HD DVD & Blu-ray): Faster response time when changing settings during scan in progress
* New (Blu-ray): Updated decryption keys
* New (Blu-ray): Added support for new BD+ protections
- New (Blu-ray): Added workaround for District 9 (US) playback problem with PowerDVD
* New: Added more info to logfile
* New: Information window while AnyDVD is scanning discs
- New: Option to enable / disable this window
- New: Workaround for problems with some VMs and certain drives
* New: Create logfiles for empty drives
* New: Better handling of "files in use" during installation
* Change: Replaced AnyDVD "Safe Mode" with "Aggressive I/O Mode".
- Note: Aggressive I/O mode is disabled by default. It might be required with some 3rd party software. Please report which programs require it. Thank you!
* New: Added warning message, if applications requiring "Aggressive I/O Mode" are installed
* New: Added option to disable the "Aggressive I/O Mode" warning message
* Fix: Driver verifier problem with ElbyCDIO.sys
* Fix: Various potential crashes
* Fix: Changing a disc could be missed while AnyDVD is scanning a disc in another drive
* Some minor fixes and improvements
* Updated languages

Download : AnyDVD & AnyDVD HD 6.6.1.4 Beta

WinRAR 3.92 Beta 1 (32-BIT) & (64-BIT)

noreply@blogger.com (Mr Hmada Zidan) — Mon, 25 Jan 2010 17:34:00 +0200

WinRAR 3.92 Beta 1
WinRAR is a powerful archive manager (Win32, Linux, Mac). RAR files can usually compress content by 8 percent to 15 percent more than ZIP files can. WinRAR is a powerful compression tool with many integrated additional functions to help you organize your compressed archives. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format.
WinRAR puts you ahead of the crowd when it comes to compression.
Changes in Version 3.92 beta 1:

1. If you start WinRAR command from Explorer context menu in multiple monitor configuration, the command dialog will be displayed on the same monitor as context menu. In previous versions it was always displayed on primary monitor.
   2. WinRAR "Compress and email..." context menu command adds the archive name to email subject. Previous versions left the subject blank.
   3. In RAR 3.91 -x switch could also exclude folders from archiving even if mask contained wilcard characters and did not contain a path. For example, -x*. excluded all those folders, which do not have the extension in the name. Now -x switch uses RAR 3.80 approach for masks without path, excluding folders only if mask does not contain wildcards and matches the folder name exactly.
   4. Bugs fixed:
      a) WinRAR 3.91 reported the incorrect "Unexpected end of archive" error, when opening an empty ZIP archive created with "New WinRAR ZIP archive" context menu command;
      b) if "Delete archive" option was enabled when unpacking several ZIP archives and if one of archives was damaged, WinRAR did not delete archives after the damaged one, even if they were unpacked successfully;
      c) if file matched two different masks in RarFiles.lst, WinRAR could select the last match. Normally, if neither of masks is a subset of another, the first match must be chosen.

Download : WinRAR 3.92 Beta 1 (32-BIT) & (64-BIT)

Top 10 Winamp Skins

noreply@blogger.com (Mr Hmada Zidan) — Fri, 22 Jan 2010 16:53:00 +0200

Top 10 Winamp Skins

Download now

Internet Download Manager 5.18 Build 7

noreply@blogger.com (Mr Hmada Zidan) — Thu, 21 Jan 2010 20:45:00 +0200

Internet Download Manager 5.18 Build 7
Internet Download Manager (IDM) is a tool to increase download speeds, resume and schedule downloads. Comprehensive error recovery and resume capability will restart broken or interrupted downloads due to lost connections, network problems, computer shutdowns, or unexpected power outages.

Simple graphic user interface makes IDM user friendly and easy to use. Internet Download Manager has a smart download logic accelerator that features intelligent dynamic file segmentation and safe multipart downloading technology to accelerate your downloads. Unlike other download managers and accelerators Internet Download Manager segments downloaded files dynamically during download process and reuses available connections without additional connect and login stages to achieve best acceleration performance.

Download : IDM.v5.18.7

GigaTribe - 3.00.021

noreply@blogger.com (Mr Hmada Zidan) — Mon, 18 Jan 2010 02:14:00 +0200

GigaTribe - 3.00.021

GigaTribe allows you develop and manage your own file-sharing (P2P) network. Use it so you can exchange large files with your friends. This software is ideal for those wish to share their information and files privately. Only the users you have invited will see the files (and folders) you share. Your friends can browse through the shared folders on your hard drive and vice-versa.

All exchanges are strongly encrypted. Interrupted exchanges automatically resume with no data loss. Define users groups to share distinct folders with distinct groups. Multi-source download is available to increase your download speed. Can also be used to access your PC from a remote location.

What's new in this version:

Fixed connection bug when GigaTribe is set to launch at start. v2/v3 compatibility enhancements.

Operating System Requirements:

This product is designed to run on the following operating systems:

Windows Server 2008
Windows Vista
Windows XP
Windows 2003
Windows 2000

Download : Download GigaTribe Now (File Size: 7.8M)

Child Control 2010 - 10.316

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 21:07:00 +0200

Child Control 2010 - 10.316

Child Control keeps track of the time your kids spend in front of the computer. Once their time is up, the computer automatically shuts down and won't start up again.Child Control gives your kids back time that they are then free to spend in other ways.

What's new in this version:

Security Update & Fix: STATS mail shows only current user.

Operating System Requirements:

This product is designed to run on the following operating systems:

Windows Vista
Windows XP
Windows 2000
Windows NT
Windows 98
Windows 95

Additional Requirements:

266MHz Pentium II
64MB RAM
5MB HDD space.

Download : Child Control 2010 - 10.316

PhotoInstrument - 3.1 build 341

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 20:41:00 +0200

PhotoInstrument - 3.1 build 341

PhotoInstrument is an easy to learn tool for editing and retouching digital photos. The powerful raster graphics editor in PhotoInstruments quickly and easily allows you to adjust and process digital photos. PhotoInstruments rich tools and effects offer adjustments and photo retouching tools that are usually found only in expensive retouching software. Now with just a few clicks in PhotoInstrument anyone can solve most digital photo problems.

So easy to use that anyone can apply these changes. Included with PhotoInstrument is a short video tutorial that will teach you how to use PhotoInstrument in just minutes. PhotoInstrument supports more than thirty image formats including PNG, JPG, BMP, TIF, PCX, TGA, EXR, ICO and Adobe Photoshop PSD. PhotoInsturments user-friendly interface, supports these languages: English, Bulgarian, Czech, Dutch, Farsi, French, German, Hungarian, Italian, Korean, Polish, Portuguese, Russian, Serbian, Spanish, Simplified Chinese, Traditional Chinese, Turkish, Vietnamese.

Operating System Requirements:

This product is designed to run on the following operating systems:

Windows Vista
Windows XP
Windows 2000
Windows NT

Download :PhotoInstrument - 3.1 build 341

WinUtilities Free Edition - 9.37

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 18:47:00 +0200

Product Description:

WinUtilities (Free Edition) is a multi-functional system performance and optimization suite for Microsoft Windows. This collection of tools lets you supercharge your PC's performance, enhance its security, tweak and optimize its settings, and customize and personalize your screens. Registry Cleaner makes your system more stable by cleaning out the bad Registry entries that build up each time you install and uninstall software.

The program's Registry Optimizer defragments and rebuilds your Registry, making your entire system run more smoothly and quickly. The program includes powerful tools to clean and optimize your hard drives. The Disk Cleaner removes clutter and unnecessary files from your PC, allowing it to run more quickly. The DiskDefrag module defragments your hard drive, keeping it running efficiently. WinUtilities's Windows Optimizers keep Windows running faster. The Memory Optimizer ensures that memory is released properly when you stop running each program on your system.

Operating System Requirements:

This product is designed to run on the following operating systems:

Windows Server 2008
Windows Vista
Windows XP
Windows 2003
Windows 2000
Windows ME
Windows NT
Windows 98
Windows 95

Download : WinUtilities Free Edition - 9.37

Windows 7 Themes (2010)

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 18:36:00 +0200

New 10 Windows 7 Themes (2010)
Size : 58 MB
In Windows 7, Microsoft has included a new desktop customization feature called Aero Themes which enables users to customize the desktop wallpaper with a matching glass color, screensaver, icons and sound scheme of their choice.
Here is a collection of different Windows 7 themes including the ones from the final RTM Build of Windows 7.

Installation Instructions: Double click the downloaded .themepack file to install it. These themes will only work on Windows 7.

Download : Windows 7 Themes (2010)

Winamp 5.572 Build 2830 Final

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 18:31:00 +0200

Nullsoft Winamp is a fast, flexible, high-fidelity media player for Windows.
Winamp supports playback of many audio (MP3, OGG, AAC, WAV, MOD, XM, S3M, IT, MIDI, etc) and video types (AVI, ASF, MPEG, NSV), custom appearances called skins (supporting both classic Winamp 1.x/2.x skins and Winamp 3 freeform skins), audio visualization and audio effect plug-ins (including two industry dominating visualization plug-ins), an advanced media library, Internet radio and TV support, CD ripping, and CD burning.

• Full version plays MP3s, AAC, WMA, and more; Compatible with Winamp 2 Plug-ins; Full Support for classic and modern skins; Plays Videos; has a Powerful Media Library; Browse Internet Radio & TV Stations; Integrated Internet Music videos & Songs; Bundled Visualizations; and Burn & Rip CDs.
• The LITE version plays MP3s, AAC, WMA, and more. It is compatible with Winamp 2 Plug-ins and has full support for classic skins.

Download : Winamp 5.572 Build 2830 Final

Messenger Plus! Live 4.83.376 Final

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 17:46:00 +0200

Messenger Plus! Live 4.83.376 Final
Messenger Plus! Live is an add-on for Windows Live Messenger that adds tons of features and extras to the software. Extend the possibilities of Messenger and make your experience a lot more entertaining!

The only thing needed to use Messenger Plus! Live is Windows Live Messenger (the latest version of MSN Messenger) which requires Windows XP or above. Messenger Plus! Live is compatible with Windows Live Messenger 8.0 to 14.0 (2009) and can be installed on 32bit and 64bit versions of Windows XP to Windows 7.
Installed more than 500 million times since 2001, when it started as a simple add-on for MSN Messenger 3, Messenger Plus! is guaranteed to improve your Messenger experience by leaps and bounds. You won't just get a couple of new options, what you'll get is a whole new dimension for the Windows Live Messenger software.

Messenger Plus! adds lots of capabilities to Windows Live Messenger. The new features can be accessed easily from the various Plus! menus and buttons you'll find added to all the main Messenger windows. Here is a short list of some of the features most people enjoy in the software:

• Tabbed Chats
• Custom Sounds
• Colors, Formatting and Commands
• Quick Texts
• Personalized Status
• HTML Chat Logging
• Contacts on Desktop
• Account Polygamy
• Messenger Lock
• Contact List Clean-up
• Event Viewer and Logging

The current version is distributed with the following languages:
English, Spanish, French, Arabic, Chinese Simplified, Chinese Traditional, Danish, Dutch, Estonian, Finnish, German, Hebrew, Hungarian, Italian, Japanese, Korean, Norwegian, Portuguese, Swedish, Thai, Turkish.

Download : Messenger Plus! Live 4.83.376 Final

Haiti quake aid effort still slow

noreply@blogger.com (Mr Hmada Zidan) — Sun, 17 Jan 2010 17:41:00 +0200

The delivery of aid to victims of Haiti's earthquake is still being slowed by bottlenecks, aid workers say.

UN and Oxfam staff are finally bringing food and water to some parts of the capital Port-au-Prince, but the airport remains clogged with loaded planes.

Many survivors of Tuesday's quake have become desperate as they wait for aid, and many are trying to leave the city.

Leaving for Haiti, UN Secretary General Ban Ki-moon said the quake was the worst humanitarian crisis for decades.

The UN has launched an appeal for $562m (£346m) intended to help three million people for six months, while some two million people are thought to need emergency relief.

Meanwhile first reports from the epicentre of the earthquake suggest the damage is even more dramatic than in the capital.

The BBC's Mark Doyle in Leogane, west of Port-au-Prince, described the scene as "apocalyptic", with thousands left homeless and almost every building destroyed.

But in a sign of hope, rescuers pulled a woman alive from rubble on Sunday. Twelve others were rescued on Saturday, the UN said.

There are also security concerns amid reports of looting.

The US Southern Command's Lt-Gen Ken Keen said that while streets were largely calm there had been an increase in violence.

"We are going to have to address the situation of security," he said, quoted by the Associated Press.

"We've had incidents of violence that impede our ability to support the government of Haiti and answer the challenges that this country faces."

AFP news agency quoted one of its photographers as saying police had opened fire on looters in a Port-au-Prince market, killing at least one of them.

Airport 'overwhelmed'

Correspondents say although the amount of supplies getting through is still small, there is a sense of movement at last.

The UN World Food Programme has been handing out aid packages containing food, while UK charity Oxfam has been distributing water.

US troops said they had set up their first foothold outside the airport to deliver aid carried in by helicopters.

But many victims are still not receiving any aid, as the airport remains a bottleneck. UN Humanitarian Coordinator Kim Bolduc says getting supplies out to them from the planes is still a major hurdle.

"The Haitian airport now is overwhelmed," said UN Assistant Secretary General for Peacekeeping Operations, Edmond Mulet.

The port is badly damaged, and many roads still blocked by corpses and debris.

David Wimhurst, a spokesman for the UN peacekeeping force in Haiti, said aid was being delivered as quickly as possible.

"Aid is going out but it's simply impossible in 24 hours to bring in enough aid to instantly feed all these people, many of whom are in places that are inaccessible," he said.

The Haitian and Dominican Republic governments are planning an alternative 130km (80 miles) humanitarian road corridor to deliver relief supplies from the southern Dominican town of Barahona, the UN reports.

The UN has warned about fuel shortages, which it says could affect humanitarian operations.

"Fuel is the key issue," Elisabeth Byrs, a spokeswoman for the UN Office for the Co-ordination of Humanitarian Affairs, told the BBC. "We need fuel to bring in supplies and carry the wounded."

'No help'

The UN says up to 80-90% of buildings in Leogane, about 19km west of Port-au-Prince, have been destroyed.

One survivor in the town said he had come to Haiti from America for his mother's funeral, only for his wife to be killed in the earthquake. He said that so far people in the area had received no help of any kind.

"We don't have any aid, nothing at all," he said. "No food, no water, no medical, no doctors."

Estimates of how many people died following the 7.0 magnitude earthquake on Tuesday have varied.

The Pan American Health Organization put the death toll at 50,000-100,000, while Haitian Prime Minister Jean-Max Bellerive said 100,000 "would seem a minimum".

A UN official has said aid workers are dealing with a disaster "like no other" in UN memory because the country had been "decapitated".

Three ministers and several senators are reported to have been killed.

The US has launched what President Barack Obama called "one of the largest relief efforts in its history" following the quake.

US Secretary of State Hillary Clinton was the first senior Western official to arrive in Haiti, on Saturday.

She told Haitians that the US would be "here today, tomorrow and for the time ahead", asserting that "Haiti can come back even better and stronger in the future".