VidRes is an easy to use utility that allows you to change most display settings interactively, or via shortcuts.
VidRes is often used to change the display settings for specific programs. For example, if you have your computer set to take advantage of the high resolution of your display, but prefer to run a game at a lower resolution, you can use VidRes to create a shortcut that will run the game program and switch to the lower resolution. When you close the game, or switch back to your main desktop, VidRes will restore the display settings to their original values.
VidRes can change most display settings, including the resolution, colour depth, primary display in a multi-monitor desktop, and the current display in an independent multi-display system.