I might instead recommend you use a BOOT CD (so you don't EVEN boot the infected hard drive at all) to run a Linux based antivirus to cleanup your system. I recommend using a clean system to download System Rescue CD (http://www.sysresccd.org/Download) and to burn it to a CD (not DVD). Then be sure to print the instructions for how to run the antivirus (http://www.sysresccd.org/Sysresccd-m...Clam_AntiVirus). There's actually a mega-ton of useful tools on that CD that could be helpful for a myriad of x86 32-bit or 64-bit computer problems no matter what operating system your computer is running.

THEN... be sure to install a strong antivirus (I recommend using Avast (www.avast.com) since it's free for individuals and seem to be spot-on much more reliable than the entirely unreliable stuff from McAfee and Norton). F-Secure (http://www.f-secure.com) also seems to be a strong favorite.

Good luck!