heya; i would open the obj in uvmapper, select all, and assign it to one group to get the single group bit. if, however, you want different materials, i'd make one group for each material. then i would use ray dream (you can probably use carrera, but i dont have that) to re-divide the mesh. just hop into the mesh, select the faces of each piece, and do a selection:detatch polygons. then name polymesh. (give it the group name, ie: lhand rshldr, whatever.) ray dream doesnt support materials (dunno if carrera supports materials, that'd be nice), so i would make each material still a separate group. for example, i'd end up with a group for the head!skin, head!eyes, head!fur; whatever. good luck; it looks like a nice model. :)