IE or Fire Fox will let me use ANY links, only the address bar. No search engines work either. Any ideas?

I can use the address bar to go to most websites, only myspace seems to not work. I can go to Google and type in a search and nothing happens, same with all other search engines. I cant get any links to work either. This is a problem on Internet Explorer and Firefox. Anyone have any ideas of whats going on?|||You may need to reinstall your browser. You know how to do a clean install? Type msconfig in the run box and uncheck everything or click on disable all and restart your computer before you do anything!