The application has a preset for the Lego Mindstorms NXT robot. Also, in the settings screen you can configure a protocol to send messages to a third-party Bluetooth enabled device.
Just press the Connect button and after selecting the device, you can press Start Connection in order to start sending commands towards the NXT or the other bluetooth enabled device.
For more details look up on our Google Project page at: http://code.google.com/p/bluetoothcontrol/ .
Disclaimer: This is an open-source student project created for the NCIT Summer School at Politehnica University of Bucharest, the Computer Science Department. Code contributions are welcomed. Please contact the administrator of the project from the link above for more details.