You can’t go direct. You first need to encode the sequence as an MPEG2 file using third party software. If Sorenson Squeeze was provided as part of your bundle, then use that. Export a QuickTime reference from the Avid and encode. From there the MPEG2 elementary streams are out into a DVD authoring software for output to DVD from your burner.
Or do like I do for quick reviews, buy an external DVD recorder for less than $300 and do it in real time directly from the timeline as a playout. Depending on model, you can go out as composite, S-Video, component, or DV.
Michael