Questions on collision detection

I'm about finished skinning my new model and am about to add the 'Collision-1' marker and 'Col-1' mesh,

1) do I simply put boxes around my mesh, "Attach" them, and name them 'Col-1'?

I've read the Max2DTSexporter doc (about three times, just to be sure I didn't miss anything) and it doesn't go into collision for something as complex as a human. Since precise collision detection is probably one of the most important parts of the game I'm making, the collision mesh has to be fairly close to the actual mesh.

2) If the collision boxes/shapes can all be attached into 'Col-1', what are the other 8 'Col-#" there for? Would they help the engine in determining different hit locations on a model more quickly?

3) Should I overlap my collision meshes before attaching them?

4) If not, what would prevent my model from breaking through a collision mesh during an animation?

Thanks for your time. If humans were shaped like cubes, I wouldn't bother asking these n00b questions, but then again, I probably would have a hard time typing.