This script will help you build a morph target based on a final pose that is compatible with whatever skin you are using. If you need to convert a skin morph to a morpher or use a morph target instead of a skin morph, this should help you.
What it does:
It moves the vertices of a morph target around to make the vertices of the skinned poly match the position of the vertices in the posed poly.
You will need 3 objects:
1. An editable poly with a morpher modifier then a skin modifier (skinPoly).
2. An editable poly to get the final pose vertex position info from (goalPoly).