Zigbee Commands

HI everybody!!!I am a new one to this forum.Please help me finding solution to the following:::
"I am Krish.I am doing my academic project.Title is:---HOME AUTOMATION USING ZIGBEE.
How can i send the data serially thorugh UART by sending commands to the ZIGBEE(digi's XBEE ZNet 2.5) by using Switches,but not using the PC(computer)..
Hope to get reply soooooooooooooooon........
Tq.
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There are a number of threads on hear discussing this topic, if you search for Xbee you will find them. Here are some links i've put together for my personal referance.

http://www.kelvinsthunderstorm.com/2009/02/twitter-burglar-alarm/

http://mrtof.danslchamp.org/AXIC

http://www.ladyada.net/make/xbee/arduino.html

Those should get you started. I also have a nice PDF which walks through the setup of Xbee 2.5, so if you let me know your email, I can email it to you.