zigbee

Hi

I wanna a project for my studies...

here is what i would like to make..

1. A RC Car that is controlled via computer and not by the its remote. i wanna create a application that controls the car and also displays real time video.

2. I wanna use zigbee (XBEE pro) for transmitting and receving commands and controls.

3. Wanna use mobile phone (wifi) camera for video transmission.

now i wanna know How can make this ???

1. which microcontroller should i use ????

2. which software should i use to make the compuetr app.

hello! anyone of you ever used one (well, two) of those modules? I'm interested but there are many version to choose among.. Any experience to share ?

Also, is the XBee USB exporer enought on itself to connect an xbee to a pc ? looks like a good solution for the pc side.