I'm currently able to have windows 7 extend the desktop to a monitor that is actually not plugged in. I do this by 1) plugging in a monitor (windows automatically detects the monitor) 2) I plug out the monitor 3) In the screen resolution dialog I can stil extend the desktop to this monitor that was plugged out This works for me both with a laptop (dual monitor setup (laptop display + 1 non-existing monitor)) and on a desktop computer (3 x ATI Radeon 57xx GPU setup (In this setup I can plug in the monitor to yet another port and end up with a desktop with three monitors, although only two monitors are actually plugged in)). This is exactly what I need (for a rather non-standard application) and my question is if I can hope that this is going to be standard windows behaviour in the future. Can anyone comment if this feature is likely to stay as it is for the foreseeable future and I will be able to make windows extend the desktop to a display that is not connected? Thanks!