How to Repair Add/Remove Programs in Windows XP

1. Click 'Start' then 'Run'
2. Type 'regsvr32 Appwiz.cpl' and click 'Enter.' Click 'OK' on the 'RegSvr32' dialog box.
3. Type 'regsvr32 mshtml.dll' and click 'Enter.' Click 'OK' on the 'RegSvr32' dialog box.
4. Type 'regsvr32 shdocvw.dll -i' and click 'Enter.' Click 'OK' on the 'RegSvr32' dialog box.
5. Type 'regsvr32 shell32.dll -i' and click 'Enter.' Click 'OK' on the 'RegSvr32' dialog box.
6. Reboot the computer and access the add/remove programs utility, which should now work properly.