hang-the-9 :
What do you mean by "improve the signal"? Many computers automatically disable the onboard video card when an add-on one is installed, so you can add a video card but you would probably lost use of the onboard ports.
"improve the signal" refers to my assumption that an HDMI signal is much better than a vga signal. There is a vga and an hdmi port on the factory m'board.......my thinking was by adding another card with hdmi, I'd accomplish all this.