Now I will add the replicator, select the wavy surface where the objects will be replicated on, and put the five rocks into the replicator.

I then made the replicator surface 500% and turned off it's visibility.

For the render shown below, I set the backdrop to gray and the background to gray and turned on indirect lighting.

This is setup with 100 rocks and I had to reposition the camera to get something that made sense.

-Kix