Hi jyzca, welcome to NST.
Your problem does not sound to be related to the second install, and a reinstall would have replaced the existing, so I doubt you'd find two copies in Add/Remove Programs either.
Quick question: are we talking about XP or Vista here? I'm 99% sure this is XP, but since it's in the Vista forum, I thought I'd double-check.
My advice would be to completely remove all instances of IE that you can, and reinstall from scratch.