Using the XBee RSSI To measure wireless signal strength

Projects General Guidance
1

The purpose of my project is to have my robot (already built, pretty friggin sweet) use the MaxStream Xbee to measure signal strength from a wireless router using the RSSI, and with this signal strength it will drive towards the router based on getting a better signal.

What I Have:
Arduino Mega1280
MaxStream XBee and Arduino Adapter
Robot(Programmed to Drive)

What I need:
A way to get the RSSI value from the XBee (the code required)
Any additional code that may help

Any information that you can give me would be very helpful.

2

A way to get the RSSI value from the XBee (the code required)

The code won't really do you much good, as the RSSI value is not at all accurate. Moving 5 feet closer may actually get a lower RSSI value. The RSSI value is only XBee to XBee, too, not XBee to a wireless router.

You need to figure out a different approach.