Plz, I need all the help I can get

I'm trying to write my own script for 3dstudio max, I made some thing that work, but I can't get the other stuff to work.

I made a script that creates a .MDL file.

I can make my script export:

Version (that was easy :)
Mesh Verticles
Mesh TVerticles
Mesh Faces
Textures and Materials
Model Name !!! :)
Animation Sequences (Mostly Translate)

I need to know how can you make your script export:

Mesh Normals
Mesh Vertex Group
Mesh Metrices Groups
Maximum Extent
Minimum Extent
Bound Radius

If u can plz help me with those and I'll try to make a good script.
And I promise to share it with the community.

Republicola, I know that your script rulez so if you can plz help me with mine by telling me how to make your script export the things written above.

P.S.
A little info from a very reliable soure told me that the original blizzard models were done on 3ds max 3 or 4 !
So I know I'm on the right track :D

Of course they did it with 3D Studio Max (I think 4, 4.2 or 5). But they have got professional programmers who have a bit more experience than we modders.

I hope that the MDX tool pedition is successful.