Hello, this is my first post. I'm from Portugal so please forgive me my english. I have a Lcd philips 30pf9975 and on the manual says that "EXT5 Y-Pb-Br 480p, 576p,1080i." I have my dvd player (also a philips dvp720sa) connected to the lcd with Y-Pb-Br and i have progressive scan activated, and in the lcd osd shows that i have 576p. My questions are: 1- What is the diference between the "p" and the "i"? 2- What is better, the "p" or the "i"? 3- How can i get 1080i? Thanks in advance.