I don't know what you exactly asking for but i know there's a program called subtitler that will create subtitles and put them on to DVD.

and if you ask for DVD authoring programs then there are many out there but no one promises too much good.

sony DVD architect good apps but takes too much time to arrange all things together and also asks more space to burn. (personally i don't like it)
Ulead video studio or DVD factory ____ did you tried these softwares.
what about adobe premier.

sorry if i'm off topic.

These dvds are for international distribution and I would like to be able to add the most common used languages to the dvd 7 or so not sure yet...

example someone in china buys the dvd they have the option of selecting their language through the dvd menu... Chinese subtitles run at the bottom of the screen

I haven't tried those programs yet just cuz I don't feel like putting the money out before i know whats what or if they are able

Take a look at the feature set of DVDitPE (PE = professional edition) for dvd authoring.

It's a bit pricey - like around $600 - but I think it may do what you want.
goodluck

Well adobe encore can do that, i've done it but don't forget if your dvds are going to be shipped abroad to choose the right conversatation (pal versus ntsc).