I am about to buy a second LCD screen for my computer but my current AGP card (http://www.newegg.com/Product/Product.asp?Item=N82E16814133144) has only one output for monitors and one s-video (which currently only outputs in greyscale). I am considering buying a PCI gfx card (http://www.newegg.com/Product/Product.asp?Item=N82E16814164047) to host my second monitor as well as TV output but will it work? Can i use two graphics cards at once and will my AGP card still do all the processing or will each card process for its own screen or what?