Hmm, ok well not knowing exactly what the problem is, I would suggest checking your add/remove programs in control pannel. You should find a selection saying "microsoft Internet Explorer 6 with tools" or something to that effect. If you select that and then hit add/remove buttion you will get a option to update, repair, or remove. I would try repair then if that does not work try remove. Do not have any other programs running and if you have norton protected trash bin, turn that off. And make sure that your virus protection is off when you do installs, repairs or even uninstalls.
I should mention that somtimes installs fail and if you ininstall and reinstall it will work. But as I said turn off all programs in the background, including norton protection trash bin (if you have that) and any anti virus software.
-Gameman