I began purchasing season episode dvd recently. Each dvd has six episodes which reside on a dvd-9. What I'd like to do is divide the six episoded onto two dvd-5 blanks but keep the main menu on both discs. Disc 1 would contain episode 1 to 3 plus the main menu. Question is what program would I use to edit the main menu to disable the episode buttons for episodes 4 to 6? Same for disc 2. Episodes 4 to 6 would reside on a dvd5 along with the main menu. I would then disable the episode buttons for 1 to 3. Simply selecting the disabled buttons would do nothing. Not sure but I believe editing the ifo would work but I'm not experianced in this field. Thank you.