mac :: pivot/desktop rotation for my ibook G4 12″

As i like to rotate my desktop on my ibook i was looking for a pivot software. I read something about a trick to get this feature in the system panel (option key+mouse click on display), but that doesn’t work for me. So i tried the new ATI Driver for my ATI 9200 Mobile card. And that’s it. This new driver has the ability to rotate my screen.