Most of the Industrial Projectors comes with the standard VGA connector. You can read more about the same here "http://en.wikipedia.org/wiki/Video_Graphics_Array" if you want to control and send any signal, VGA Driver is Necessary. Most of the computers/ Laptops has one built in VGA Controller. The simplest thing to do is to have extra VGA Adaptor connected to the system and set the Desktop screen as extended screen. Create one LabVIEW Application can run on second Monitor. In that application Display the colors as you want, it will send the singnals accordingly. In this application remove the titlebar, Menu bar and Toolbar, Set the window size as the screen size.
