http://www.theeldergeek.com/repair_ie6.htm

If no go try re-installing I.E.


Re-Install IE in Windows XP SP2
Re-Install Of IE 6.0
Insert the Win XP CD Cancel auto start.
Open Start / Run and paste:
rundll32.exe setupapi,InstallHinfSection DefaultInstall 132 c:\windows\inf\ie.inf
Press ENTER