I would assume most people here are using DVD studio pro that comes with the Final Cut Studio or Encore which comes with the Adobe Production Suite. I have never heard of DVD Architect, but I would try the manual, or maybe they have a small forum for that software somewhere?
Daniel J > Why would you assume most of us here would be using dvd studio pro ? Especially since we are not a FCP or Adobe Forum. You probably mistook this for another forum. Most, if not all of us here use DVD Arch 4 which comes with Vegas. Since this a Vegas forum there are hardly any of us here who use the packages you mentioned.