Hi Karthikeyan,
You can find lot of projects on Arduino under the section EG LABS > MICROCONTROLLER > ARDUINO. Here is one example of interfacing the Xbee with Arduino.
http://www.engineersgarage.com/embedded/arduino/how-to-interface-xbee-with-arduino-tutorial
There are few more interesting projects on arduino + xbee and hope you find them helpful.