Sorry, but speaking for myself, I don't have an ATI 9600 card, so I don't know that I could be much help. In fact, I have never upgraded my old ATI AIW Radeon.
http://www.pcphotovideo.com has a guide on doing upgrades of ATI software drivers. The guide tells how to remove various ATI programs from the registry, which might have been helpful to you if you still didn't know what to do.