Was looking into buying the Star Wars trilogy that was just released on DVD and had a question about THX. Since my system does not support THX certified movies, what am I actually getting when I watch a THX movie. With the Indiana Jones series, when I load a movie, I click on the THX logo and it goes thru all the THX little promo and the movie starts. So am I getting what is actually Dolby Digital 5.1, since my receiver doesn't support THX. Just one of those questions that I never really thought about. Thanks