Matt,
Whenever posting questions on these forums, please give us as much information about your computer as possible. The operating system, processor speed, amount of RAM installed, the brand name of the computer (if there is one), any steps you've taken to solve the problem,and the EXACT error message you are recieving, are all necessary items. The more information you give us, the better informed our answer will be. Enough of that, back to your question.
If you haven't tried them yet, please download and install the free spyware removal programs from the links below. After installing them, update them from within the user interface of the program. Run the programs and delete all spyware that they find. BE AWARE: Some "freeware" programs that are dependent on spyware to run, (like KaZaa) may cease to function after removing the spyware. STill, it's better to find new "freeware" than to continue with the junk on the computer.
Ad-Aware 6 Spyware Removal Tool
?Spybot Search & Destroy? Spyware Removal Tool
Hope this helps and let us know how it goes.
Grif