You'll need to use the OBJ format at the point where you Poser-ise your model, because of the need to have the named groups for your "body parts". How you get to that point is up to you, of course. If you have a look in the Poser manual starting about page 304, that should get you started on hierarchies. However there is a misprint in the manual which stumped me for ages. The first line of your hierarchy file should be of this format: objFile :Runtime:Geometries:folder:filename.obj The manual gets the position of the space wrong in two different ways. :-( It MUST be objFile, space, colon, path string... and the capitalization of "objFile" and the path definition is critical as well.