uninstall in windows xp safe mode
To create a Registry entry, open command prompt ( Run->Cmd). Type the following command in the Window- REG ADD HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\MSIServer/VE/TREG_SZ/F/D %Service%
You can also create a entry from registry editor.
Next start the Windows Installer Service by typing net start msiserver.
Once this is done, you will be able to install/uninstall applications in safe mode.