a newbe needs help....6Days, 100+views and no reply!

hi there i am new with arduino so lets start slow, here is my requirment i have already selected the arduino to start my work with ( http://arduino.cc/en/Main/ArduinoBoardMega2560#.UxWsjvmSy1U and http://arduino.cc/en/Main/ArduinoBoardUno ) and a gsm shield.... however i need your help with finding the right xbee chip.

my range of communication can be anywhere between a few cm to 4km.

goto sparkFun’s XBee buying guide ,heres the link > XBee Buying Guide - SparkFun Electronics

thanks for the reply XD, i will check the link you provided. anyways we are try to make xBee 865 compatible with arduinoMEGA.