Hi, I am very new to using Xbees with the ardiuno and I am having trouble understanding the basics of there programming in ardiuno. I am using 2 DF robot xbee shield V1.4, I have 2 Xbee Maxstreams, as well as an ardiuno duemilanove, and ardiuno uno(should I use 2 of the same types of ardiunos, or will using these two work?). For my final project I would like to have a keypad send commands into the ardiuno through the xbee to another ardiuno with an xbee controlling a motor. At the moment I am using a DC motor but I have access to a lot of servos so i am thinking I will switch. One of my main questions is how do the xbees communicate? Do I have to send signals through the serial in order for them to communicate? I am also not to great at programming and am not sure how to sync the xbees frequencies. Do I do that in the programming, or before hand with a different program? I mainly need to figure out how to program the ardiuno to send and receive through the Xbees. I have gotten the keypad to work as well as the motor but integrating them with the xbees is turning out to be much more difficult then I had hoped. I would love any simple programming examples of ardiunos communicating with xbees. Any help would be greatly appreciated!