Summer Break Project

Two weeks from today starts my summer break.  I think I've decided to do something with Arduino/Xbee with homeseer.  Homeseer is the software I use to run my house, it controls things like HVAC, door locks, and lights, using a web and/or touch interface.  What I would like to do is use two xbee devices one on the server and one on the arduino and communicate back and forth.