WhoaThis
If you enter IE and click on the help up top and then the about Internet Explorer it will give you the version you are running and also the update version. If you are running 5.5 make sure you have all the updates for it and make sure it is updated to SP2.
There were many problems fixed with that update. If you are currently at IE5.5 SP2 or above then do an IE repair as I suggested before. If after all is done you still are having problems
then run a full deep virus scan with your up to date scanner and if you able to get a copy of AdAware onto that machine by going to
http://www.lavasoftusa.net/downloads.html and downloading the main program and its newest reflist. You may have to download to floppy from another machine and then transfer to problem child. Set up program on the machine and see if you have any spyware running that could be interferring with IE.
If problems are encountered with a virus let the AV program attempt a fix and let us know what it found. If spyware is found Don't remove it yet but let us know what it found.
Dave