I clicked your link and it worked fine. But by the time I got your above response, I had tried to do a Repair Install of XP--because I suspected some files were corrupt as I could not install my Videochat program. Great--except that after a good start XP announced that it was shutting down to prevent damage to my computer--and was unresponsive to any mouse or keyboard input.

So I installed my spare HDD on which MSIE was working fine. Unfortunately that didn't result in my being able to install my VideoChat program.