Using Blender and XNA for collision detection

[rjdfhorn06]

I'm currently working on a project where my group has to develop a 3D fps game. We are using the Bullet physics library. I've already built some models and levels in Blender. Does anyone know how we would go about putting the models into XNA so they have proper collision detection? I've been searching for tutorials and information on this and everything seems to point to exporting the Blender file through the COLLADA 1.4 exporter to create a .dae file. If anyone can help out on this matter, it would be greatly appreciated.

Basically, how would we apply physics to the Blender models in XNA?