Hi Dave (from East Devon),
I can run Airnav in multi monitor mode with the full interface on the left hand side, and with a full map on the right hand side.
To do this I actually span Airnav in windows mode (using regular Nvidia monitor software - which is part of the driver installation), and drag the application over the full width. Its not true Full Screen mode, but the overall effect is virtually the same, as I can see every aircraft info field on the LHS interface without scrolling.
Im running with a 24" Samsung, and 19 inch Iiyama, which gives plenty of viewing options.
One other favorite is with '3D mode' stretched over the dual monitors, which gives a wonderful panaramic Google Earth view. Almost as good as an Imax theatre... ;-)
Regards,
Jon
(also from Devon- on the Exe Estuary - not far from the old WWII radar station)