Ok, I've uploaded a new AIMFix update that covers the previous post's problem and removes a couple new variants of the virus. Again, if you know anyone who might have run AIMFix recently (specifically at the times mentioned below) please make sure they run the current version to repair the problem with the registry key BEFORE they reboot or they will be unable to get into Windows. For more adventurous souls, i found the following info on Microsoft's website that would also allow you to get back into Windows:

http://support.microsoft.com/?kbid=307545

However, it requires mucking about with the recovery console, and a simple Windows installation repair is a better option. I would recommend only loading in the "software" section like so:

md tmp
copy c:\windows\system32\config\software c:\windows\tmp\software.bak
delete c:\windows\system32\config\software
copy c:\windows\repair\software c:\windows\system32\config\software

in the Recovery Console. However, if you have the option of a repair install, this is a much better option as it won't mess up your installed software settings.

-Jay