"I read about SreeD in the readme, but it implied that P6 would detect and use the correct reneder setup for the system." It does imply that indeed, but don't trust it though. My gfx card even though much better then yours still isn't to good for OpenGL, even though Poser 6 choosed that as default. I would really recommend switching SreeD Software instead, ti will even work well on older gfx cards.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk