Your time will be much better spent removing the disk drive, putting
it into a known clean machine, pulling your data off the drive,
reinstalling the drive into the original machine, and reinstalling
windows from original media including repartitioning and reformating
of the drive.
Once you've been comprimised by a piece of malware, you can't trust
the machine again, even if one or two antivirus programs detect and
claim to have removed viruses. AV programs by their
signature-recognition design don't know about all possible malware,
and there are plenty that even if they can detect, they can't reliably
clean all remnants or permutations from.
At best you'll get a clean but subtly broken/unreliably machine. At
worst, you'll still be part of a botnet with someone else owning your
You can spend hours and hours down teh wormhole trying to bandaid the
situation, or you can invest a fixed number of hours in reinstalling
the operating system. In my experience, you're much better off
doing the latter. You'll end up at a known point with a machine you
Be sure to be behind a hardware firewall or disconnected while
installing, and behind a hardware firewall while downloading and
applying all windows updates, lest you get reinfected within an
average of about 20minutes (sans.org updates these stats) while
connected to the net with an unpatched Windows machine.