Automatic Meter Reading Project using Xbee and Arduino

hello Sir,
I am in the fianl Year engg. student. I am working on the Automatic Meter Reading using Xbee and Arduino. In this Project i want to communicate Co-ordinate to various Routers/End devices those will be place at intermidiate or at customer’s home. So how can i communicate any perticular router or end devices using co-ordinate ? plz help me as soon as possible…

Once the network is established, the best way is to use API mode and the TX request packet sending data to the desired End devices 64 bit IEEE address,.