hey Bill,
I'm gonna copy and paste this from a previous reply I made, but it is entirely pertinent to your problem.
Sounds like your experiencing an all out 'browser hijack'! You should use a friends internet connected computer with CD-burner to download each of the programs in our Internet Essentials pak. http://www.totalaccesssolutions.com/modules.php?name=Downloads. Not only will you regain control of your expensive system, you will be the envy of your friends and family. Or at least get some sort of software in each of the following categories. Firewall, antivirus, anti-spyware, and pop-up blocker. Thank you for your question!