hi,
with your PC in this state, I hope you are able to read this.
Sign-up with HFT Online:
www.hftonline.com (it's a free forum, used and visited by computer-users world-wide).
Describe your problem as well as you can in a post in the virus/Trojan section.
download Hijackthis from:
http://www.spywareinfo.com/~merijn/downloads.html
{HijackThis is a program developed by Merijn Bellekom, a Dutch student studying chemistry and computer science. One of Merijn's programs, Hijackthis, is an essential utility to help find and remove spyware, viruses, worms, trojans and other pests. Hijackthis is used world-wide}
Run Hijackthis - DO NOT ATTEMPT TO DELETE ITEMS - and paste the log with your post to HFT.
Follow their instructions exactly.
Have you considered purchasing a new PC, installing it with more up-to-date software, and transferring CLEAN files from your old PC. Just a thought. mike.