My advice if you can read it, back up everything.
If you can, boot up a copy of Ubuntu from a flash ram.
Nuke Windows from orbit install Ubuntu and run all your Windows programs through WINE and never, ever use Internet Exploder (it's the only way to be sure).
I've done this for lots of people with clogged up machines and afterwards they have no further successful viral attacks and their computers run lightning fast.
And change your passwords for everything.