I'm working for a Dentist that would like to have a dual display. One that he could see up close and one that the patient can see. I know you can use two cards to expand the desktop, but can I get both monitors to display the same image? I think I have seen cards with two outputs. Is this the best way to do this? I guess it's kinda of a dumd question, but I havent worked with any of this stuff and don't know what I need.