I am using a Evga GTX 285 DDR3 feeding a Matrox Triple Head To Go with three 46" LCD screens and a Evga 8800 GT 512MB DDR3 with a ViewSonic 22" monitor for the left side view. The 46" LCDs work great in full screen but when I open a new view and move it to the ViewSonic 22" monitor, FSX stops working and restarts. FS2004 works with no problems.System Specs:NForce 780i LT SLI MotherboardCore 2 QUAD Q6600 @ 2.4 GhzOCX 4GB 800MHz DDR2Evga GTX 285 DDR3Evga 8800 GT 512MB DDR3Seagate 500GB SATA IISoundBlaster Audigy2Cooler Master 1200w PS(3) Samsung 46

I have the same problem when running DX10. Never succeded to solve the problem, and would be glad if anybody could find a solution...on DX9, move a window, and if it works, save the flight,move the next window. If FSX crashes, reload the saved flight and go on. After 3 or 4 trys, you will have a saved flight with all of your windows in place, and no more problem when loading the flihgt. I have five windows opened together... That is the mystery of FSX ....