Excellent info. I will have to get in there and play around them. I own Poser 4,5,6, and 7, but currently only have 7 installed so I'll have to look at the P4 renderer which I rarely use since moving to 7.
Over the next few weeks, I'll try to get a few sample renders banged out and you can help me get pointed in the right direction regarding the nodes. Their flexibility tends to be their most frustrating aspect and without a full understanding of some of them I tend to get hit or miss results especially where the math nodes are concerned.