I'm not Douglas although I do work with him at VASST. ;-)
Since you have CineForm 24p source and your desire is to make a DVD I would create a project using the
HDV 1080-24p (1440x1080 23.976 fps) template. Drop your CineForm 24p footage on the timeline and edit as you normally would. When you are ready to render, use the
DVD Architect 24p NTSC Widescreen video stream template and render the audio separately as AC3. This will give you the best quality.
It is important to note that HDV widescreen and DV widescreen are slightly different. Your DV widescreen will have slight pillarboxes on the sides unless you use the
Stretch video to fill output frame size (do not letterbox) option. This will stretch your video slightly so it's up to you whether you want to use this or not.
~jr
www.johnrofrano.com
www.vasst.com