ChrisB, well, I have your Aiko-booby girl animated, but there were a few problems. First, the model had seams in it, it was not a continuous mesh. This made visible seams and gaps when animated as the vertices deformed.
This is a common problem when importing .x models, importing seems to break vertices and make each one unique, resulting in much more vertices than needed. I performed a vertex weld command on the entire model to collapse adjacent vertices, and it helped somewhat.
The other thing is, this model doesn't SEEM to have UV coordinates applied. That is, its not lining up with the standard aiko texture from FPSC. So I'm assuming you have redone the UV mapping from scratch?
Anyway, I gotta call it a day on this model, I spent more time on it than I really wanted to. I'll send it to you and hopefully it works for you. And by the way, I'll send the "femalecrew" model from DM2, I've got that animated without a hitch, just had to add some more polys around the knee area to make the squatting animations look better, I don't think this model was originally made to do deep knee bends.