Hi, i am a bit confused about the different interlaced and progressive video modes. i know that one of the highest you can get is 1080i. Does that mean it displays 540 lines at a time? Also i think theres a progressive mode called 740p. so in the same amount of time it takes the 1080i to display 1080 lines, the 740p has displayed 1480 lines? What are the advantages and disadvantages of each? And why are there different modes? Is there a progressive standard persay? For instance when it becomes more mainstream will everything be in 740p? I just find it rather confusing. Hope someone can help cheers, guru.