The ability to Repair Internet Explorer does not exist in the version that ships with Windows XP, that is, you cannot find it in Add /Remove Programs in Control Panel. This feature only becomes available after you upgrade to a newer version. This is normal and has been this way since Windows 98 and IE4. However, you can reinstall IE in Windows XP by using the following steps:
1. Get your Windows XP CD available.
2. Click Start, Run.
3. Enter the following command:
rundll32.exe setupapi,InstallHinfSection DefaultInstall 132 %windir%\Inf\ie.inf
Another way is as follows:
1. Click Start.
2. Start the Registry Editor by typing regedit in the Run box.
3. Go to HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Active Setup \ Installed Components \ {89820200-ECBD-11cf-8B85-00AA005B4383}
4. Right-click the IsInstalled value.Click Modify.
5. From there, you will change the value from 1 to 0.
6. Go to following to reinstall ie:
http://www.microsoft.com/windows/ie/default.mspx
