Attached Link: http://anim8or.com

Essie, Try Anim8or. It's free, easy and totally compatible with obj format. I have 3d max, but I make all my poser morphs in anim8or. You can find a tute on making morphs for poser in anim8or here http://3dtoday.com/tutorials/2000/sept/posermorph/default.asp mac