I use Poser 4 to import a solid, ungrouped mesh, to slice up the model. (my modeller doesn't export groups) I made a Beluga whale this way (on Funstuff) Just use the grouping tool in Poser 4, (setting the display on a wireframe view will make your grouping easier). After grouping and naming the parts of the model hit "Spawn Props", then go into the Heirarchy editor. Bloodsong is right about the joint parameters, they are a bit tricky to learn, and have to be adjusted after you create the figure.