What happens to the 1080 lines of HD source material when sent to a 4:3 set with a 16:9 enhanced mode (e.g., Sony HS or Toshiba)? I understand that when these sets receive a DVD signal, all 480 lines are drawn within the 16:9 area of the screen, giving an equivalent picture to a widescreen set. However, can it be possible that these sets are also able to resolve all 1080 lines of vertical HD resolution within the 16:9 area? If this is true, then you really do get the best of both worlds using a 4:3 set with 16:9 enhanced mode. However, I'm skeptical because equivalent widescreen sets have the full screen area (height) to display the 1080 lines. If 4:3 sets can do it using only a portion of the screen, then would that mean that the total number of lines of vertical resolution is even higher on these 4:3 sets than on equivalent 16:9 sets? Or are the 4:3 sets (even in 16:9 mode) only showing some portion of the 1080 vertical lines? Or is there some overlap among the lines?