Norton
Try getting a hold of a Norton antivirus disk, or a full-up Norton Utilities disk (borrow one--if you're not planning on actually doing an install, I see no problem with this).
You may need to poke your bios at startup (a message comes up at the very beginning of startup asking you to hit a key for "setup."). Sometimes you need to manually change the order of the drives the system looks at for the boot sequence.
Boot up using the Norton CD, and use the tools that are already onboard that disk.
It's worth a shot. I don't know how smart this virus is, but it can't infect a CD.