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........

What exactly are you trying to accomplish? if you simply need to have a few wireless switches, then you wouldnt even need an arduino, you can simply hook up your buttons directly to the IO of the XBEE modules! neat huh?