Being a college student, I've become aware of some wonderful software that installs itself on your computer, called "Adware." Before I came to college, i didn't know it existed. If you're using Internet Explorer and don't have sufficiently strict "ActiveX Controls," this bloody stuff will take hold. I use a program which is free off the internet called AdAware, downloadable from the maker, Lavasoft. I'm only pitching this because I know it works. I'm sure there are other programs, but I know of this one. Download it, update the registry file (its an option in the program) and run the scan. I'm sure you'll find a ton of "interesting" things you didn't want on your computer.