I'm glad you were able to solve your issue.
Yeah, I was just using the FTP server port as an example, as I did not have RoboGuide up and running at the time.
I created a cell, and have two robots running in it now.
Here are the port numbers:
R1: RPCMAIN : 3002
R2: RPCMAIN : 51487
Usually for more robots, RoboGuide just adds 1 to R2's port number. So for R3 it would be 51488, etc.