My Dad has an ATI Graphics card (specifications unknown) with an application called Catalyst Control panel that controls the card and sets the dual monitor. It is not fast to use that application to switch between single and dual displays and therefore, it doesn't play nice with some remote software. I will be using on my website called "dimdim". I know I could use something better for remote desktop, or built-in for that matter, but I have some particular reasons for wanting to use dimdim.
This means that I need a third-party software or something that makes it a single click of an icon to switch between single and dual monitor mode.
Any suggestions are greatly appreciated.