You don't have to render in Poser - Bryce doesn't use the rendered output.

What version of Poser are you using? And what Poser features do you use? If you're using Poser 4/PP, or if you don't use the advanced options of Poser 5 or 6 (no dynamic hair/cloth, no material shaders, just texture/bump/transparency maps), the easiest way is via DAZ|Studio. You can download it for free at www.daz3d.com.

Load your Poser scene (the .pz3 file) into DAZ|Studio. DAZ|Studio has an export to Bryce option, which will retain the textures and transparency maps. Your figure will come nicely into Bryce.

But if you're using dynamic cloth, you'll have to do some preparation. First export ONLY the dynamic cloth as .OBJ on the correct frame. Then delete the cloth simulation and reimport the OBJ you just made. You can remove the original cloth prop, after copying its materials to the imported .OBJ. Now save the scene and import into DAZ|Studio.

If you're using dynamic hair - tough luck. There is absolutely no way that Bryce or DAZ|Studio can handle dynamic hair. You need an application like Carrara 5, Vue 5 or Mojoworld to import a Poser figure with dynamic hair.

There is also no way to import an animation into Bryce. Again, you'd need Carrara or Vue (don't know about Mojoworld).

The last option is doing everything by hand. Copy all textures, bump maps and transparency maps to the same folder as where your exported .OBJ lives, and fix up the materials within Bryce. A freeware tool called Grouper (I think it's in 'rosity freestuff) can help you organize the material groups in the exported .OBJ better. I've tried this route, got quite frustrated (I always have complex scenes with multiple characters), ditched Bryce and went for Vue. Never regretted that step.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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