TripleHead2go is a module that enables multiple monitor view with only a single video source. It will split the video source in two or three divided sources providing enlarged view across multiple monitors. This sounds like a great tool for expanding outside view of flight simulator. I just had to try it…
Installation is quite simple, PC video signal goes to TripleHead2go input and three output to monitors. It is more or less plug and play, all three monitors will be considered as one very wide monitor, 3840×1024 (1280×1024 each).
I think the best option at the moment is one view in FS9 or FSX stretched over all monitors and zoomed out to 0.30 (WideViewAspect=True in fsx.cfg).
Of course it is also possible to make three separate outside views with undocked windows and pan them to make one larger and even wider view. The problem with that is significant fps drop!