Hi folks, check this out:     That's a Mac Portable driving an external 800x600 SuperVGA display in addition to its 640x400 LCD. It's no trick---Flight Simulator 4 is putting windows on both displays. (Yes, it's Woz's autograph too but that's not important right now.) The secret is this board that was sitting in the PDS slot when a friend salvaged the machine from a university storage closet in 1999:     That's a "VideoMacPac" external display card made