Attached Link: http://user.txcyber.com/~sgalls/downloads.htm

If you're into POVRay, which is old style CG but still very much loved, there's a version that will render your poser stuff. I don't think PoseRay will directly import a pz3, but I have seen some interesting renders that the POVRAY folks have done with Poser objects and materials. Personally, I like the firefly and the B5 renderer. Dunno about Mentalray. There is a stand alone renderer out there that I'll search for again. From what I recall, it needs a user that is code savvy.