I have an ATI AIW 9800 Pro. There is apparently a bug in the Gemstar GuidePlus+ software that causes the mouse cursor to disappear No Mouse Cursor
My ATI card and software ran perfectly fine for several months until it caused the mouse cursor to disappear. I ran across the (apparently very old... like two years old) link above and fixed the problem. There is also a registry fix:
My card ran ok for a couple more months, but then after I updated the weekly TV program listings yesterday... the mouse cursor disappeared again. When I checked the settings, they were reset to the one that caused the problem in the first place.
So if ATI has known about this problem for two friggin years, why don't they fix it?