Dynamic Cloth
Face Room
Material Room
Dynamic Hair.
Set up room so you can work with your Poser models rather than just view them.
Various render options.

DAZ Studio is a great program to view Poser files and has a good render engine but you get what you pay for. If all you want to do is pose (but not adjust) Poser models and have no interest in the realism of dynamic cloth or hair then stay with the freebie. However if you want to develop your 3D to the next level then I would recommend Poser 7 as a very cost effective way of moving forward.