You dont need to re-install you noob lol, you just need to apply the damn patch and delete the files used by the virus....simple...I got the files on my system, but because I installed my FW, no attacks caused it to initialise...
Heres one way to check if you actually have it on your XP, open task manager, and processes, and see if you have avserve2.exe running, if you do, your infected, your computer will then be open to attack from the i-net, and when it gets attacked, it will cause the error and countdown to restart...
Heres the info about it:
http://vil.nai.com/vil/content/v_125007.htm