replacing ati graphics card with nvidia

I am replacing an ati card with a nvidia card using driver cleaner to remove all the ati drivers. the method advised by driver cleaner is to remove all ati drivers with the add and remove programmes facility, before going into safe mode and removing the remains with driver cleaner. my problem is that there are no ati drivers or any other ati stuff listed in the add and remove facility. where do i find them to remove and by what means before i go into safe mode to use driver cleaner, any help will be gratefully appreciated by this novice.

Hi, Try going to Device Manager in safe mode and uninstalling from there. Regards paws P.S. if you need instructions on getting to Device Manager please post back