Before doing anything else, I'd like to see what happens when you try repairing/reinstalling IE6. If that doesn't work, then it would be a good idea to try out another browser.
You will eventually want to update your Windows, however, for security reasons. Let's just hope we can get your problem fixed before taking those steps. I think there's a chance that updating could fix your IE6 problem, but I would like to try everything else first. We'll keep this one on the backburner for the time being.
