Assuming that the shoes fit the figure it will take just a couple of moments in Poser. Ensure that the shoes are grouped "lFoot" and "rFoot". Import into Poser, go to the set up room, apply the V4 dev rig, back to the pose room and save to the library.

If you can get the OBJ to me by 12:30 Eastern I'll be happy to do it for you. After that, sorry, I'll be out.