Is this the 3rd installment of a trilogy? The reason I ask is that I have never seen any of the films and would like to buy the upcoming dvd. However, I don't want to watch it until the others are released. I know of day and dawn of the dead but what is the other movie in the trilogy and in what order do the movies go in? If someone could help me out here and not bash me for not knowing much about these films it would be greatly appreciated.