I am creating a SD DVD 4:3 in DvD Studio Pro. In the track editor window of the main asset I have selected 4:3 as the display mode. However, when I take the authored DVD upstairs to my plasma and play the program in the 4:3 setting on the TV it creates these weird Black and white extension borders around the sides of the video instead of the standard black strips. Is this an issue with DVD studio pro or an option on my dvd player? And how can i set the borders to black?