I have an AOpen GF4MX460-DVC64 vga card. I have it setup for dual display with both VGA and DVI connectors used. But when I try to capture something from it, the device can not see anything that is plugged into the video input (either S-Video or RCA Yellow). Any ideas? Right now, I'm going with the assumption that all three connectors; VGA, DVI, and VIVO can not be used at the same time. Only two of the three.