A client of mine has an Apollo P-2500 printer connected through USB, and his pc is running Win98Se. When he tried to print, he received an error message stating that the printer could not be found. He tried to uninstall then reinstall the drivers with the cd, but it won't allow him to do so and states that the drivers are already installed.

My question is: How do I uninstall the drivers, when it won't allow me?