Sketchup not initializing on ubuntu

Hi guys,
I use a ATI Mobility Radeon 9700running on a Ubuntu 8.04 platform installed through
Wine 1.0 rc3
When I first installed SketchUp via Wine, I would always get this error upon launching of the program.
SketchUp
SketchUp was unable to initialize OpenGL!
Please make sure you have installed the correct drivers for your graphic card.
Error: ChoosePixelFormat failed
Got ideas on this one?
Thanks.
