Problem sending data to xbee

Hey i'm able to send serial data to my arduino using the usb cable, but when I try to send serial data to my arduino using a xbee it doesn't work. Is there something I need to setup on the xbee.

Is there something I need to setup on the xbee.

Yes. But, we need a bunch more information. How is the XBee connected to the PC? Which XBee is it?

How is the other XBee connected to the Arduino? Which XBee is it?

What have you done with the XBees in terms of configuring them, if anything?

What OS are you using?