avast! Virus Cleaner is a free tool that will completely remove selected viruses & worms from PC: Badtrans, Beagle, Blaster, BugBear, Ganda, Klez, MiMail, MyDoom, Nachi, NetSky, Nimda, Opas, Scold, Sircam
Detects and removes many worms, trojans and backdoors: Mydoom, Beagle, Netsky, Sasser, Blaster Zafi, Mabutu, Startpage and many others