Newbie questions: My system played the 720 and 1080 ones using Nero 6 but I don't think it was high def. The system test showed me way below the minimum needed for 720. I just have a ti4200 and amd 2100 and a Compaq monitor. For HDD wouldn't I need a monitor capable of HDD and a better video card? What would work with the 3000 amd 64 newcastle I'm upgrading to?