Unplug your printer and if I remember correctly.
Go to Control Panel --> open Printers.In Printers --> File menu --> Server Properties -->Select Drivers tab.
If your printer is properly installed it should be listed there.
Select your Printer driver --> hit Remove.
After you uninstall the printer driver reboot XP.
I have windows xp and am trying to uninstall a lexmark printer, as i cannot install it in the c drive or on the cp.