A good example of RoboRealm working remotely is with the SRV-1 (
http://www.surveyor.com). While this particular system isn't "cheap", it shows how RoboRealm can be run on the PC with telemetry between the robot and the PC via WiFi.
By the way, the SRV-1 is capable of quite a bit of image processing using the on-board processors, but having the ability to connect easily with RoboRealm makes it amazingly powerful.
Win