Funny thing is, I tried the 2009 trial and it does the same thing! The 8800GT is qualified with only 1 caveat, the IPR line doesn't display...
So I've put it down to Apple's drivers (or lack thereof...) Hell, Maya 2008 works better ITO display on my 5 year old Titanium Powerbook with an ATI 9000M!
Hardware = Great!! - Drivers = Crap!!