Dual Bipolar Stepper Motor Shield + XBee Bluetooth

I am trying to get these two programmed such that my android tablet can talk to the arduino via bluetooth, but I am not having any success sending commands to the xbee bluetooth module which is in the xbee socket of the motor shield.

The two products:
http://www.dfrobot.com/index.php?route= ... pQwcPk4GHs
http://www.dfrobot.com/index.php?route= ... pRlZvk4GHv

Used with a vanilla non-knockoff arduino uno.

I am specifically trying to figure out the TxD and RxD pins that map to the bluetooth module so I can talk to it. A listing of commands for it would also be nice. Unfortunately the link to the wiki from the bluetooth product page is lacking a lot of information.