If you have a modelling program, do this to get a Combined Figure- In the modeller, line up the parts you want to use, deleting the unwanted parts. Then export it as one mesh. See Mason's tutorial on this. Also, if you don't have a modeler, BUT the parts ARE already lined up, then you can use Compose to do this. If the parts aren't lined up, you might try exporting from Poser after you've set up the character (only export the parts you want). Then follow the rest of Mason's tutorial.