Antivirus To Use If You Know You Have A Virus

For years now the FREE Malwarebytes Anti-Malware has helped me remove viruses from many PCs after they have been supposedly cleaned of viruses by other antivirus systems after an infection. The is no automatic on-access scanning in the FREE version, so I wouldn't recommend it as your main antivirus program, but it's great for a 'second opinion'. See: http://www.malwarebytes.org/products/malwarebytes_free/