I'm running an Intel system, same drive, VistaHP 32bit. TMT is the only software that will play HD DVD and Blu-ray from the harddrive without makeing ISO's, you need another piece of software to mount an ISO, less is better. I just loaded TMT3 and video quality is great, what a job they did on Goldfinger. Only drawback so far is it doesn't work with VMC yet. Have been happy with TMT2 as it works with VMC flawless for me along with MyMovies and TheaterTek for SD DVD's. Haven't tried TMT3 with SD DVD yet but TMT2 isn't as good as TheaterTek.