I just made an example about using Arduino talk to a Xbee module. https://sites.google.com/site/xbeetutorial/example
Welcome to have a look.
Also , this example has a link to show how to achieve Internet controlled Arduino , so you can remote control and monitor your Arduino online using IE or Firefox. You can monitor and control your Arduino no matter you're in Europe , Asia , Africa , or America , once you have a internet.
Another link show how to use Arduino to control a DC motor , Stepper Motor and servo.