I installed Vista Business a year ago or so and haven't been able to play any movie DVD's on it since. Every time I try a warning shows saying "Windows Media Player cannot play DVD video. You might need to adjust your Windows display settings. Open display settings in Control Panel, and then try lowering your screen resolution and color quality settings." There's a link for "web help". I press it, and all I can get from it is I need to install a DVD encoder...but then it says that any version of Vista above Home Basic should already have it. I've fucked with the resolution, been on the net, searched this forum, and haven't had any luck. Suggestions?