All xbee are transceivers and work on zigbee protocol... what is model number specify.. if you dont know then give us link or picture to get an idea of it....
As I can see from the dayasheet, you will need a "Level Translator" chip since the transceiver UART levels are CMOS 3.3V
You will need a MAX232 to interface the transceiver to the PC, and you will need a 3.3V to 5V level translator in case your controller is working with 5V. https://www.robokits.co.in/downloads/XBee-Datasheet.pdf
Hope this helps.