Kasperskey Rescue CD

Create a Kasperskey Rescue CD and run it at computer startup. This is the disk you will run right away at boot time if a virus does happen to get through your defenses. Since it runs before windows starts it can do a deeper scan of the whole windows environment find things that are not locked out by running windows processes. If you are infected or you have been infected in the past and have not run a boot time checker, this is your first step.