fucking virus

i just repaired my desktop pc using windows repair mechanism when my virus-scanner started popping up and telling me, that a backdoor trojan virus has infected my system.
"did the removing of SP2 automatically install viruses?" was my first thought. i never had any problems with viruses before and i check for the running processes randomly to be sure nothing strange happens. so i am very sure that i DIDNT have any virus compromitting my system the before the repairing with windows-cd. but whatever!
so at the moment i am rescuing whatever i can get from the system, that is not infected by mr. pokapoka62.exe. the trojaner-board recomondations to that virus are:
-format your harddrive
-reinstall system

SOWHAT, that is not the fucking information i want! fucking viruses... i hate u

so since now i am using a new virus scanner.

keep your hands off this product, it sucks!