I have to agree with other posters that this app is virtual useless for production work. The renderer is unbearably slow, especially for lights with shadows.

And although they keep updating the hair and cloth capabilties, the rendering with hair is EVEN SLOWER. Fortunately, 6.0 includes figures with trans-mapped (textured) hair.

There is still no other app like Poser, to easily create realistic people and pose them for use in your 3D scenes. However, the best thing you can do is create, dress, and pose your figure and bring it into another app (it's well-integrated with Carrara, but exports to most apps) for rendering. And note this workflow is best suited for still images, although some apps (e.g. Carrara) allow for animated figure imports.

Just don't think you can do animations within Poser, especially not with hair or other dynamics. And I'm using a dual G5 2Ghz with plenty of RAM, so it's not that I'm on a low-end Mac.