On a non-infected box,
Grind it to cd... It is in ISO format, so you need to know how to grind a CD from a file.
BitDefender.com: "How to create a BitDefender Rescue CD"
Boot to the disk, and scan the affected computer.
kb.BitDefender.com:"Using the BitDefender Rescue CD"
BitDefender's clean up engine is pretty effective. It is Linux, but the AV pops up when the boot is done, so all you really need to do is press it's start button...
This is just like in the old days... One needs the native OS to be off-line to kill the bugger, so one must use a boot disk.
I have other solutions if this one doesn't work, but they all require a miniaturized Windows platform to run from - Something Joe-user would have a hard time putting together... Lemme know.
And once you get rid of it, how do you keep it from coming back?