wine users - Aug 2005 - No subject

So now I get past the atl.dll problem and get to the SketchUp splash screen, 
which is nice.  But, I then get the error:

Unable to initialize OpenGL. Check drivers etc.

And

Error: ChoosePixelFormat failed

I have an nVidia based system and have recently downloaded the gl driver and 
enabled 3d.  All working fine under linux.  I have also googled for an answer 
to this but can't find a similar problem.

Thanks in advance,

Nick