Creating DVD with subtitles and karaoke subtitles



Hey. I’m just in the proces of designing a dvd of children’s games. I want to have three options for each short film: no subtitles, standard subtitles and karaoke subtitles. I want to know whether I need three different MPEG files to deal with this, or whether I can have just one MPEG for each film and somehow switch to the differernt options. HAs anyone got any experience of doing this.
Also, I have Premiere to edit with, but suspect I might need to invest in Final Cut - any opinions ion this?
And finally - what should I use to create Karaoke style subtitles?