Help-Difference between menu subpic. and subtitles

I am trying to remove subtitles from a DVD using DVD rebuilder, the problem is that DVDrebuilder seems to be listing the movie subtitless as well as the DVD Menu subpictures (buttons) and I'm not sure which is which. Is there any way to identify witch subpicture is the subtitles and witch subpicture belongs to the menu?

Here's a screenshot of DVDrebuilder:


Before anyone asks, yes this DVD has only one set of subtitles, in the DVD menu the only option you have for subtitles is on/off. I'm pretty sure the second set (or first set) listed must be for the DVD menu.