See whether repairing I.E. helps. If you've been having a lot of errors, run scandisk and defrag.
If you don't have Internet Explorer version 5.0 or newer, install at least version 5.5. Version 6 is now available...
Go to Start --> Run --> type: msinfo32 in the open box --> click OK --> From Tools the menu
--> choose IE Repair Tool --> Repair IE.
Another way to repair is go to the Control Panel - Add-Remove Programs > Highlight
Internet Explorer > Click Change-Remove tab > Repair I.E. > OK - Yes
Note: If you get an error message saying it cannot be repaired, redownload and install
then run the repair.
Latest version of IE can be found :-