AVG ... just run a search on download.com sorry but they wont allow me to post the link.
I personally don't use it but its free to use (at least so far) and from what ive seen and heard, people who have it are mostly pretty happy.
i think i have a virus or spyware . i use Spy Sweeper
.Ad-Aware SE Personal .Spybot Search & Destroy CCleaner.but something is stell runing in the back ground.i have no virus programs do any one no any free virus programs.