My desktop PC has 2 Sapphire Radeon 6950s and they are connected via DVI to a 27" ASUS LCD and a 19" Acer LCD. The motherboard is an ASUS P8Z68-V PRO G3 and it has an HDMI out. Can I output via HDMI to a Sony Bravia 48" LCD from either the motherboard or the HDMI out on the video cards? Is there software to manage something like that?