Hello,
Xbee modules comes with lot of features and documentation. This also introduces complexity. To get the XBee modules to communicate, use the documentation that is specific to that module (as there are different versions available in market)
1.Configure two Xbee modules to communicate (UartSBee with X-CTU software).
2.Make this communication permanent by writing the setting to internal eeprom
3.Use UART software to Tx-Rx between Arduino UNO and Seeeduino Stalker
You could read a nice book on this topic “Building Wireless Sensor Networks: with ZigBee, XBee, Arduino, and Processing” or understand about XBee using this tutorial.
Happy Making!
Thanks.