I played with .rib export years ago and got it to work with the (then) free BMRT renderer. IIRC, I had to change the line endings in the .rib file from PC to UNIX format or vice versa. The textures may have to be in the same folder as the .rib as well, I don't remember. AFAIK, Renderman is about as complex as you're going to get in terms of rendering frameworks though.Without a LOT of work, you're probably better off with Poser which does a decent job for what it does.

PoseRay is a fantastic piece of software. The ability to get Lightwave models into Poser alone makes it worth the download. Aside from Daz Studio, it (with POVRay) is the best free alternative rendering solution for Poser content - I've seen not counting Stewer's which I haven't tried. Even so, POVRay is a whole world unto itself and you'll never access it's true power by simply exporting a Poser file and rendering.

For free, you can try Daz Studio,  Poser/POVRay or Poserman/3Delight and learn their quirks and possibly buy extras for DS like the Human Surface Shader. Or, one of the excellent free renderers like www.kerkythea.net/joomla/ and go from scratch with the .obj import, slave over material settings etc. route  You can pay money and get Vue, Carrara or C4D and InterPoser and possibly extras like SkinVue and still have to learn to get the best use of each render engine.

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