I am trying to set-up my computer to view the monitor and projector at the same time. I have a dell gx280. I have a dvi port with a dvi to vga duel splitter. I am able to connect using port 1 of the splitter, but not port 2. What do I need to do to get port 2 of the splitter to send data? Or is there something that I need to do to the card?