Originally i to used to have spy sweeper however for some reason or another i was not pleased with it. Spy bot is a very good program but i can almost guarantee you there is still spyware on your pc even after you've searched with spybot or spy sweeper. Cool web search for one will just not go away, if you download hijack this or at least bazooka you will see that there are pieces of spy ware spysweeper or spy bot did not pick up. Personally i run all the programs mentioned above to make sure there is no spy ware on my pc. It may seem extreme but there are some things some programs pick up that others do not.