There is a document that was available for download from e-frontiers. Its a Poser 3 document on figure creation . It explains a lot about creating figures in Poser and uses a fairly simple phi file method . There is a utility called phibuilder that will help.

Poser 3 Advanced Techniques Guide.pdf
http://graphics.smithmicro.com/filemanager/list/updates/59/66/93/?sbss=

Phi BUilder
http://www.royriggs.com/poser.html