Hmmmmmm! I don't know if I've done things correctly but I seem to have FCP7 running on both monitors. I'm running a 8 Core Mac Pro, with 2 GT120 cards and 2 24" Apple Cinema Displays. This is what I've done: I've loaded up FCP7. I have the Browser, Viewer and Timeline in the left hand monitor. I've dragged the Canvas to the right hand monitor and the View/Video Plackback I've set it to Digital Cinema Desktop Preview - Full Screen. I now am able to make all my changes in the left hand monitor and can see a full screen preview in the right hand monitor. The only downers are that the 100% actually loses parts of the picture!!! Is there anyway to let me see the actual screen size? I also have a massive gap where the Canvas once was!! I can make the Viewer or Browser bigger but this just seems like a cheat!!! Is what I've done the correct way of doing things? Or is it just a work around/cheating?