How to use the data received from an XBee Pro S1 to a S1 USB adapter?

I am new to XBee development, and have a XBee module hooked up to an analog device and is being sent to an XBee USB adapter. What I would like to know is: now that the devices are communicating, what do I do with the data received? I want to be able to display or read the voltage level either with a computer or a remote LED meter, or both, so what do I do to make that happen? I realize I may need a DAC, but I don’t see an easy way to hook that up to the white USB adapter. Is there a program I can use to display the data on a computer screen? Or do I have to create one? And how to I access the PWM output on the adapter?

You need to write an application that read the API data off of the radios COM port that then does the math and does what ever you want with the data.

Okay. I don’t know how to do that, but thanks anyway!