For anyone having that OGL crash problem in Poser 7, try this.
"Prime" Poser first. Seriously, give it a try. Open Poser with a blank document, then rotate the camera a little for a second or two, then load a figure and you should be good to go.
Seriously, give it a try, it worked for me when I was having problems before the latest 64 bit nvidia drivers for Vista. Seems Poser needs a boost to get going or something, sometimes.
There's some sort of configuration file hack, too, but I can't remember what it was.