I have a Dell 8400 with top-of-the-line LCD monitor. When I play pro DVDs I get super quality on my screen but when I nwatch my homemade DVDs or television on my monitor the qulaity is not great. My resolution is set to 1280 x 1020 and I have a Radeon X300 video card and a Radeon TV Wonder card installed with a gig of RAM. What can I try? Thanks.