Sorry if this doesn’t help (I’ve never used Avid DVD), but I’ve done this with other packages (DVDLab PRO, DVD Architect, Encore DVD, DVD Workshop, and even the free DVDAuthorGui). Basically, you prepare your motion menu with the buttons “burned into the video”, and have them fade in at a certain point. This video becomes your motion-menu background. You then add your button highlights at the end of the “fade-in” — either using external highlight subpics, or using highlight objects in your software and setting a “Loop Point” or some other indicator of when the buttons should become “active” (i.e. selectable by the viewer). Making the buttons selectable at a certain point is the tricky step, and it’s a little different depending on the software you are using.
Regards,
George