Answer
This question was answered on February 13, 2006.
Much of the information contained herein may have changed since posting.
Winfixer is not actually a virus. It is classified as a "Potentially Unwanted Program" It is supposed to fix Windows errors. It will install itself and requires you to pay a subscription fee through the Winfixer website before it will actually fix anything. An anti-spyware tool is the best way to attack this problem. Spybot is an excellent free application that can be easily found through a web search. Take the following steps to remove Winfixer:
1. Download and install Spybot - Search & Destroy.
2. Download and install Updates. Updates should be automatically downloaded with a click on Search for Updates button on the toolbar.
3. Run Spybot - Search & Destroy and click Check for problems button to allow Spybot to check your hard drive.
4. In minutes, Spybot - Search & Destroy reports the following problems.
* WinFixer2005
* WinFixer
* Winsoftware.common
5. After Spybot is done scanning, click Fix selected problems button on the toolbar to remove WinFixer and other spyware detected.
6. You should reboot your computer and run Spybot check again to assure that WinFixer is removed from your system.