Xbee is simple and works well with the Arduino.
Its about $20 for one module. You'll need two.
Ok I'm looking at as they seem to be the only ones with the Xbee in the UShttp://www.sparkfun.com/commerce/categories.php?cPath=2_103
I would need 2 of them and 2 of the "Arduino Stamp"?
If this is correct how would i go about programming them. Would i also need "Arduino USB Board" or does the Xbee also have the ability to program
*Note im just starting out with the Arduino so please bare with me =)