What are the sites that gave you viruses?
There are many sites, emails, and IMs, that can give you a virus.
My best advice is to make sure you have a firewall, and virus protection software installed and running. These programs will block viruses, and warn you when you are about to download something that is potentially harmful.
AVG is a free program that you can download safely from Download.com. It can search your computer for viruses and delete them if found.
I know 2 or 3 sites that will give you a virus and tell you about it. done go to them your real talented, the tricky part is I can't share them with anyone one a school network or a company network. . they are meant for training purposes and Yes I have lose a couple of computers to them. . . one is hosted by Mcafee. . . . . That's all the clues you get.