Thanks ! I was able to accomplish what I wanted.
A question about shadows - Lets say the light falls on a "Phong" material object1. Now if another "Phong" material object2 comes in between the light source and object1, then does the shadow of Object2 fall on Object1 and vice-versa? When I created this scenario in a static mode that had all the 3 objects in line, then I don't see this happening... Do I need to do anything extra to make this happen? I am trying to create a Lunar/Solar eclipse scenario. Thanks for your help!
Edit - I have tried all the Q3D plugin system - shadows/auto update shadows; I even tried Light [Shadows] conditions as well...But nothing seems to be working.
Probable bug - When I set the Camera to Orthogonal for Q3D in C2 properties panel, then changing the the x-position and z-position of the camera seems to have the same effect. Not sure if this is a bug or intended functionality....