1.make a new project and select "Normal (VTS Menu + Movie)" and select PAL.
2.Import converted files to your project their bitrates is better to be about 1200kbps.
3.from "connections" select "movie1" and add the imported video and audio which are now separated.
4.add your subtitle remember to choose proper script for its font.
5.sometimes you need to save *.sub as *.son (Spruce DVDMaestro) using subtitle workshop.
6.from menu select movie->Auto-Chapter and set 30 chapters for each movie.
7.now click on the "menu1" then select your background at the bottom of the page in the "background tab" and add some text and then right click on text and link it to first chapter of the movie.
8.you can compile your dvd and then burn it.