The key to getting this fixed is to have another computer where you can research the problem on the first one, and a thumb drive where you can download any of the remedies and move it over to the other.

If you have to reboot to repair Windows at some point in this keep an eye out for the message (something like "F8 for BIOS") that will flicker across the screen from the ROM as it starts up. Mash that button as soon as you see it until the BIOS come up and you can, if you need to, set up a CD drive as the boot disk to get away from the infected C drive. See if you can scan or do repairs from Safe Mode, etc. There are still lots of options for getting this sucker cleaned up, but they take a little time and patience.

Good luck.

SRS