I have a 2nd monitor I want to hook up to my Desktop but the main monitor I have is already using a DVI port on the video card. the Video card has a HDMI and a VGA port left, the 2nd monitor has DVI-D (with cord) and a VGA port on it. so should I get an adapter or just get a straight VGA cord? An Adapter is cheaper but I figured that is upscaling and might not look as good as a straight VGA cord...