Auxillary screen

Hi Jan I have found that I am using 2 monitors one 2d and the other interlace 3d for pro-motion. I have also found that I like to keep the animation window small so I can preview what I am doing in real scale. Is there any way to make an additional screen maybe an auxillary screen to place on the second monitor so the monitor could have a huge 3d preview on it or a small one depending on the user. Please consider. Thank you in advance