My dad's desktop was infected with many things and I used Grif's advice to clear out most of the pests. Eventually IE began to work but later we discovered another infection that we could not remove. So the files were saved and we reloaded the OS.
Here's Grif's advice -> http://forums.cnet.com/7726-6132_102-5098912.html?tag=posts;msg5099421
running windows 7. Internet Explorer will not load at all