Editing a DVD

Hi all, I could use some help with a project I want to tackle. I want to take a 1:45 clip from a movie and put it before the trailer – all are available on the DVD I have… but I don’t know where to start, or how to finish… any suggestions… better yet – a step by step?

You could use DVDShrink in Re-author mode…
http://www.dvdshrink.info/reauthor_basic.php
For the 1:45 clip just use the start/End frame feature and move up above 1st title position…