Playing movies sequentially "Play All" function in iDVD

I have several 5-minute movies that I'll be burning to DVD. It's easy enough to have a button for each movie on the main menu screen, but is there a way to add a button to play all the movies on after the other?

I realize I could copy each movie into one big iMovie and use chapter marks at the start of each "sub-movie", but that's a lot of copying & pasting and opening & closing (I'm using iMovie 5). So if there's an easier way to do it in iDVD, then I'd prefer to take that route

iMac G5 Mac OS X (10.4.4)