DVDrhelp is great for DVD. Look at: hxxp://www.dvdrhelp.com/forum/userguides/141024.php, in particular at the section using DVD2one. The latest version, 1.3, includes a new option, "Join" in the Movie Only, Full Disk dropdown menu. I haven't tried it myself but I believe that is the simplest answer to your problem. Otherwise you are into quite a complex process with vobedit and ifoedit - I've been down that route and although it works it is best avoided!