what resolution should I use for dvd from my source (details inside)

[powrslave]

I want to maintain highest possible resolution from my content that is native 640x360

what should I do to make it fit screen a little more while maintaining highest possible res?
I'd like to make it into 720 format and figured i could just add some black space to all sides but what should the video be set to?

[guns1inger]

If you are converting it to DVD then you have to resize it to a DVD compliant specification. 640 x 360 is 1:1 representation of a 16:9 NTSC video, so if the framerate of the source is 23.976 or 29.970, the logical path would be to resize it to 720 x 480 and encode it for 16:9. If you use something like DVD Flick then you have it add a small black border around the outside, although this really isn't necessary in most cases.