Thanks, Trip. That's exactly what I needed to know. My dealer was under the understanding that it would not be controlled by a Beosystem 3, but he was uncertain.
The output of the BeoMaster 5 is DVI-I, but would a DVI-D to VGA adapter work? The adapter fits but has less male pins than the DVI-I female port on the BeoMaster 5.
I have a couple of weeks until my new BeoSystem 3 arrives and wanted to be preparing.