compiling the models in game

[Fluttershy]

Hi! i want to ask you how i can compiling my models from 3d studio max into amnesia the dark descent
i want to know
1. What program i need (url and tutorial for using if you can please :3)
2. How i can place materials with my model
3. If i wanted to replace some models in game would standart animation work with it?
hope you'll help me