Internet Explorer redirects to Firefox?

Normally, I wouldn't complain about having a screwed installation of Internet Explorer. For the longest every I've used iexplore's address bar, it launched the link in Firefox instead. This was starting to get annoying as I like to check my web designs in both Firefox and Internet Explorer. Anyway after searching for answers over a few days I came across a blog on MSDN with a solution to this problem. Apparently, however, this wasn't all that was wrong with my Internet Explorer install as now it freezes when rendering web pages more advanced than a little text. I'll update when I figure this one out.