Create chapters in iDVD

I have already asked a similar thing in iMovie forum, but then thought maybe here is better..

I have one movie on one file captured from a dv cam and want to burn it to a DVD

Since iDVD wont let me get rid of that menu system and just play the movie then i thought I may as well split sections of it in to Clickable chapters on the first menu screen.

So how can this be done in iDVD...or do i have to go and cut the original movie in to individual projects in iMovie first , then export as movies, then drag back in to iDVD. I tried the import function of iDVD...but the import seem sto play...but there is not menu item for it..Looks like I can only get a menu item by dragging the movie clip in from the media browser

thanks

Neil