TH2go and FSX

Some time ago I setup my flight simulator using a Matrox TH2go digital version. The resolution for the three monitors are 3840x1024. In the display settings of FSX I have 3840x1024x32 checked and in the fsx.cfg file I have listed under my video card with that same resolution. In the matrox Power Desk (multi display setup) is listed 1280x1024 [3x1]. When I start my computer all three screens startup right or as they should however every time I start FSX the opening screen starts up on the center screen. I can "streach" the screen to fit but all is fuzzy on the outer two screens when flying. Can this be fixed? Any Ideas?

deskpilot