I used the BlueDVWindows program in a beta release for the AMBE3000. I did not use the DRAWS system, but did build an interface to allow the RS-232 control lines to signal PTT and SQ to my analog side. The program has provisions for setting up the RS-232 control signals.
I do the exact thing you are wanting to do - during our weekly net we integrate the analog repeaters with D-Star through the BlueDV program. I have a write-up on the Interface if you are interested.
