I've managed to pick up a rather nasty virus.

It repeatedly closes all programs that are running and has nestled itself in the registry somewhere.
I managed to delete the program I though was responsible (and got hold of a permanent file delete application to zap it) but it's still there.

How could I DL and run that program?
Well that's the wierd bit and kinda gives me some hope; It only affects one of the users on the computer, the rest are fine. So presumably it's in the user files somewhere.
I'd rather not do a full re-instal, but I dont' want to leave it there.

I've ran Adaware and Spybot, but neither found it.

Any ideas?