Pls help me!!!

Pls help me!!!

I need help.
Can someone fuse 2 models for me
I need the help for my map. I try to create a Angel, but i dont know, how too fuse two models.
You should fuse a wingmodel with the Arthasmodel, and the wingmodel with the Deathknight. So that Arthas/DK will have wings. pls help me someone

PS: There is the wingmodel: http://wc3sear.ch/index.php?p=Models&ID=2773&sid=9e1d4a5ce29cbd78b2a9fbe9f7b353db

They is already an agnel model, well lots actually. And DONT post this in the models forum, post this in the requests.