Ambient Occlusion

My ambient occlusion doesn't appear to be working properly. Idiscussed this issue with Ron Bates at SolidWorks World. Hesuggested that I make sure that the lights are set to be low, andhave it mostly lit by the ambient light. I have reviewed mysettings, and I still cannot produce the ambient occlusion effect.

I have attached a sample screenshot, and the SW2009 part file thatI used. For that screenshot I have RealView turned on, and "shadowsin shaded mode" turned off. I also included one with "shadows inshaded mode" turned on. Note how it gets really dark. I am usingthe standard lights created by the scene. I have an nVidia Quadro3450 video card. I set the part appearance to be satin plastic.

So, to get ambient occlusion to work, is "shadows in shaded mode"supposed to be on? If so, what's the deal?

Sorry for the large file size, but I wanted to make sure the imagesproperly showed all the detail.SolidworksGeneral