Hi,
 
I am shooting DV footage with reference ping pong balls. I track the points in MM and solve. I set up a basic coordinate system and export so I have a Maya camera. I import the camera into my Maya project and position the 3D objects the way I want them in the scene. I'll replace the image plane video that MM used with an identical version with the ping pong balls rotoscoped out (After effects).  
 
How do I configure the shadows of these 3D Maya objects to cast over the tracked video footage. I have been rendering my frames out of Maya (with th e DV video in the background as the image plane) and haven't been able to figure out shadows.  
 
-Dave