InstallAware

I was working on a project on two screens (lapto and 2nd monitor). I take the project home - one screen (laptop main). I try to edit a dialog and I can never get to it, it's on the 'screen' that isn't there. Is there some way to reset this to force it back a position on the single screen ?

Its simply showing at a part that is not visible on your un-extended desktop. So set the Left property of the dialog to pull it back in range. At runtime, the dialog will center normally anyways.