If you have multiple monitors connected to your PC, clicking a program's maximize button will usually make it take up the whole screen of one display. VirtualScreenMaximizer will make that single program stretch across all of your displays with the click of a button.
The utility is a tiny (32KB) executable. Just download and run it and an icon will show up in your system tray. Right click that icon to open the config menu and select the hotkeys you want to use to maximize or restore programs. You can select key combinations like Ctrl+Alt+F6 if you want too.