I have just purchased an analogue Matrox Triple Head 2 Go and have managed to connect it up and install latest SGU. Unfortunately it does not have a setting for Virtual Skipper 5 Americas Cup and I would not have a clue how to make it work. I did get Flight Sim 2004 to work on 3 screens but that was easy because once I optimised it, it made a desktop icon and the sim started up in 3 screen mode.
There doesnt seem to be anything in the Virtual Skipper Menus that I can select. I did try just copying and renaming the Flight Sim Config file but I guess it is not that simple.
OK. Got it working at last. Solution was simple once I read a few posts here.
Chose Configure at start screen and chose highest setting which is greater than 4:3.
Game started in widescreen. Looks a lot better on 3 screens as it is easier to keep sight of the mark and other boat.