Spyware killers do not get rid of virus's! They help in preventing them. if the virus is new and no software has been written for containing it , you cant stop it.You have to update virus software all the time. As for Lunix There is also Macintosh which has A Unix Core now and is more reliable than lunix and might we note Lunix runs on a Mac. Mac have very few virus's as with lunix.Nortons is good for virus software for a PC, Macaffe Pro I think is better with updatting and getting new updates. Spybot destroyer is a good product for keeping spyware which can have virus attached in the spyware.Adaware is also good but it creats a huge memory block on your computer and slows down computers. Just a few thoughts.