Without any more specific questions, I cant help much, as Im only new
to directx myself.

But check the 3DGS manual for any mention of "mesh", especially functions
with 'mesh' in their name. When 3DGS talks of meshes, they ARE directx meshes
extracted from the models by 3dgs functions.

If you are familiar with C/C++/C#, also look in the "D3D9.H" file in your
gamestudio INCLUDE folder, that will give you an idea what directx interfaces
are readily available.