Do you already have a RN-XV? The bare XBee module? In this case go and get a Wireless SD shield (http://arduino.cc/en/Main/ArduinoWirelessShield).
Do you already have a RN-XV? The bare XBee module? In this case go and get a Wireless SD shield (http://arduino.cc/en/Main/ArduinoWirelessShield).