Autonomous Localization

Now i have problem for the ArduPilot Mega - Arduino Mega compatible UAV Controller http://www.dfrobot.com/index.php?route=product/product&path=35&product_id=364. Is it possible can connect to Romeo-All in one Controller (Arduino Compatible Atmega 328) ? http://www.dfrobot.com/index.php?route=product/product&path=35_38&product_id=56

Because the all the instruction from the Romeo-All in one Controller, and ArduPilot just autonomous navigation. For the XBee parts just for transceiver data to the mobile robot move or navigation.

The question is: 1. Is it possible can use ArduPilot Mega - Arduino Mega compatible UAV Controller + Romeo-All in one Controller + XBee wireless communication? 2. How about the connection ofArduPilot Mega - Arduino Mega compatible UAV Controller + Romeo-All in one Controller ? 3. Should I add the GPS? http://www.myduino.com/index.php?route=product/product&manufacturer_id=14&product_id=152

Thanks :)

There's another person with a similar issue. http://arduino.cc/forum/index.php/topic,68922.msg509084.html#msg509084 Perhaps the two of you could get together...

Cross-posts deleted, member...advised.