Vehicles Help In 3Dmax 4

Hi all,

I now figured out how to get static models into the engine. A couple of things i still need help with are:

1). Turrets: How do we attach them, and do we animate the turret up down right left or is it contoleed by a script?

2). Has anyone figured out how to do treads yet for tanks?

3). Can we have hollow vehicles to walk into?

Thanks,

Ted