I have two monitors, one an acer 20 inch and the other a dell 19 inch.i am running vista 32-bit with 3 gb of ram. i am using an onbaord Radeon 3300 HD, along with a graphics card that i took out of machine runnung XP media center edition. I dont know what kind it is, but windows found/uses a radeon x300/x550/x1050 series driver. I know there are many things that could make this not work, especially since i dont even know what type of graphics card the second one is, but it does work. both monitors come on, and i even changed it to where the second monitor is used as an extended desktop. but once i actually start using both of them (dragging windows over to the other screen) one cuts off, then the next, and the only way to get them to show a picture again is to manually restart the computer. Any ideas of what the problem is?