Microsoft Internet Explorer 6.x Repair for Windows XP
From the Start menu, select Run.
In the Open field, type sfc /scannow (Note: There is a space between sfc and /scannow)
Select the OK button.
Follow the prompts throughout the System File Checker process.
Reboot the computer when System File Checker completes.
It works! Checks the Windows components for errors and repairs 'em!