Bone setup can mean two things - grouping the OBJ, to indicate which bits of the mesh go with which body part, is a function of your modeller and is the same whether you are rigging in Poser or DS. I think this is what you are asking about. Creating the skeleton and attaching the grouped mesh is what you do in DS, and that is covered in both the videos and in Cliff Bowman's tutorial thread among other places.