Quote - there should be an option under the HELP menu to see the opengl thats in use. If it refers to a microsoft driver then you have a minimal opengl and using the sreed (?) preview may be better.
Its dependant on your video card drivers .  I recently got a nvidia 6200 card that works great Opengl 2.0

I've noticed that It's done this on a couple on a number of different video card configurations (Geforce 6800, 7950GT; 8800GT, Quadro FX 570),  and processors (Opteron 185, C2D T7700, C2Q 6600) with 4GB ram. I'm wondering if this is a quirk in Nvidia's drivers or something wrong with Poser's implementation of OpenGL.

Sreed performance is terrible compared to the OpenGL setting; it just seems weird that the older version of Poser will display it correctly on the preview.