[BLAQmx]

You can build your VI into an RXE file in one of three ways, but all require the VI to be targeted to the NXT. This is done by navigating to File»Target to NXT. Please be sure to have your NXT turned on and connected to the computer when doing this. If you are using a USB connection LabVIEW should automatically find the NXT. If you are connected via Bluetooth and have not established the Bluetooth connection in LabVIEW yet you will be prompted to establish connection (just follow the on screen instructions).

Once you are connected to your NXT (you should see your NXT's name in the bottom left-hand corner of the block diagram and front panel windows) you can either press the Run, Deploy, or Debug button. All of these will compile you code and automatically download the RXE file to the brick. The functional difference between these 3 buttons is as follows.

Run: Compiles, downloads, and immediately begins running the program.
Deploy: Compiles and downloads the program.
Debug: Compiles, downloads, and immediately begins running the program. The front panel window for the VI goes into a run state and Front Panel controls and indicators can be used to interact with the program running on the brick.