sMS or Love Virus

I am running Win2k and somehow on new year’s eve, got a really annoying file tcpsvs32 in my /winnt/system32 folder. I know this was tough to deal with, but out of desperation, I installed Mcafee, Norton, PC-cillin , none of which helped (what are they for anyways?). I can’t access registry and task manager as it just goes away. I reinstalled Windows. I have done so many other things, and this is my final resort. It’s just I don’t want to format. The virus was sending attachments on my behalf, but I managed to stop that. Is there any patch/solution to this. I have SP3 for win2k.

Thanks a million.