I recently fixed a computer that was taken over by that "Antivirus XP 2008" crap. The guy got it through myspace somehow. Anyway it isn't that hard to get rid of. If anyone needs any help PM me. Basically use task manager to kill the tasks and then go delete the files with the date it happened on that are in your c:\windows\system32 folder. It also changes your screensaver and wallpaper.