XP upgrade trouble

Hi, I recently upgraded my last computer and uped my ME and went to XP, I have upgraded three others computers and never had any problem. During or anytime after, but this time ?><<>?>, about half the time when I start Internet Explorer, I get the ?Windows encountered a problem?, the one with the ?SEND, and DON?T SEND, buttons (I hope you know the one I?m talking about)?. Do you have any suggestions for solutions? Please help.

Thanks, Henry Matusevic