First of all, of course, you need 2 NXT bricks. Second, plug them into your computer with the USB plug. Then, change the NXT names to : "NXT 1" and "NXT 2". Without these names, the program will not work. (The first program is the program for "NXT 1". The second program is for "NXT 2")
When your all done, have fun and ENJOY!! Oh, and you can also make your own BluTooth programs!
My robot is an RC car. It uses BluTooth to control the car with the remote, and it has a cannon on the top! The 2 back wheels dont have rubber on them, just so that it drives better. It also has two lights.