Yeah….its all Software. There are only 3 stand alone tools which author pop-ups and the professional functionality you see in stores: Blu Print, Scenarist and Do Studio. Blu Print is 50K, Scenarist runs 15K or so and Do Studio is 3K. Do Studio is somewhat buggy and has just been bought by Sony, so I dont know how much support you will get.
Here’s an old article I wrote which goes over it all. Its a little old so some things are outdated but has some good info and some menus Ive worked on 🙂
magazine.creativecow.net/article/bluray-today-and-beyond
But honestly, Whens the last time you bought a DVD? I maybe buy 2 a year. With the online and VOD distribution channels growing everyday, whats the point?