There is a very good piece of freeware called Spybot Search & Destroy that will not only remove spyware, but vaccinate your comp against getting it in the future. I have not seen a Gator, Xupiter or C2lop popup since I started using it. It also can install a really good ad blocking hosts file, too, which makes web pages load much faster. And for those looking for free hosting that doesn't come with ads or popups and gives you a lot of freedom, look into getting a site at web1000.com. I moved my site there about a month ago and I am very happy with the services there.