You can use Womble's MPEG Video Wizard ([Link: videohelp.com]) to do exactly what you need. The only thing is you might need their DVD version (haven't used it so can't help there) to take everything back to a DVD.

What I typically do is move only the VOB files over to my PC. I load the VOB files and edit as needed. I then output the project as a DVD-compliant MPEG2 file without recompression (keeps the original quality as the original). I then load the MPEG2 file into my DVD authoring program to create a DVD that suits my needs.

A good source of info is www.videohelp.com. They also have an incredible number of freeware, shareware and payware descriptions along with user satisfaction with each too.

Hope that helps.

L8r,
Don