I'm not quite clear on your question.
The headline on your topic says you're working with HD video -- yet your question seems to indicate you're working with standard definition video. Am I missing something?
If you have NTSC DV Widescreen footage in a NTSC DV Widescreen project, I think that you would be better off using burn to DVD disc with preset NTSC_Widescreen_Dolby DVD and then letting the TV DVD player settings take care of the rest.
Do you have a compelling reason for wanting to go burn to DVD disc with preset = NTSC_Dolby DVD?
More comments later.
I did not see SG's post until after I posted mine.
I replied to your question based on the content rather than on the Title as posted.
I suspect that your HD in the title was a misprint, intended to be 16:9 video instead of HD video.