"center of interest" 16:9 dvd authoring???

[jaw2957]

I was wondering if anyone knows how to author a dvd(with any program) which will allow you to have the "center of interest" choice. Another words, you have the 16:9 film on disk, and for those people who like 4:3, you can just have the center of interest for 4:3. Many official dvd's are doing this, so you won't have to put 2 versions of the film on a disc, and I have also heard of people doing it. Just want to know if any of you are doing it, with what, and how?

[alkieman]

I have DVD Virtuoso from Spruce/Apple which supports that feature but I never do it.