I've been tasked to build a system capable of doing some digital video work. But the person is on a fairly tight budget. I've scoped out the rest of the system, but need some help on the video card. What should I look for in a card? I plan to install a firewire card so will have that access. If so, should I even bother with specialized ports (s-video in/out, vivo, etc.) on the video card?