http://secondlife.dolphpun.com/daz3d/
Daz is a very powerful FREE poser clone. In addition to making animations, you can use it to create pictures. I use the rendered pictures in several of my products in SL. They give you a bunch of free content so do spend some time and add M3, Akio, and Emotiguy.. but definatly check out the freebie vault too. They give you free content in the hopes that you will buy stuff to go with the freebies.
However most of the content is priced for an artist's budget.