I am trying to write some code (in squeak) to talk to the Lego Mindstorms NXT. Therefore I need to communicate with a Bluetooth "serial port".
I once wrote started doing exactly that. The basic communication protocol using bluetooth is working but I didn't got any further as time is missing. The code certainly only works on OS X and Linux right now, but maybe it is still useful to you? Probably you need to implement a different subclass of NxtConnection to access the serial port the windows-way.
Please keep me updated in the progress, I am interested into that kind of stuff ;-)
Cheers, Lukas