units from BBW to XGM mod

I recently tried playing BareBonesWar mod, and I liked the new greek units (running phalanx), so I wanted to implement them in my XGM mod (a couple of those units)

But I soon figured out I need to implement the BBW skeleton as well, and I don't quite know how to do that...

Any help?

Ian

PS: to be clear, I know how to create a unit, that's no problem, it's just the skeleton/animation stuff...