Physics Simulation Forum

Hi all!
i'm newbie from blender, I'm using 3ds max and I'm very interested about creating .bullet collisions to use in my project
reading somewere seems that the fastest way is to use blender to export .bullet files..
how can I do this?
is there a step by step guide to do this?
thanks in advance

'ive seen this link http://www.youtube.com/watch?v=fv-Oq5oe8Nw&hd=1
and now I have some thing clear.. but is there a way to modify the collision properties? like for example a cilynder, a scale, a position, etc?

example:
http://screencast.com/t/4ZmS3Heq
the barrell have the 0,0,0 on the bottom side, not on the center of the barrel..
If I set a trimesh, everything works fine, but if I select a cilynder, that I think is faster use instead a trimesh (I don't need a precision to require a trimesh collision for this object), but the offset is wrong, as you can see from the screen...

how can I solve this?
thanks in advance!