I am a film producer/screenwriter and I watch at least one DVD movie on my PC every day. What setup -- video card, monitor, sound card, anything else -- will give me the best quality playback? Currently I have a Samsung 19" LCD, SB Audigy2 ZS, a 7600GT, Klipsch 2.1 speakers and 1 GB DDR 400 RAM. The films look fine, but I'm wondering if the quality could be improved upon. Thanx.