How to unpack DVD movie to edit it's video/sound?

[Strong]

>      <vob file="movie1.mpg
> "chapters="0,0:30,1:00,1:30,2:30,3:00,3:30,4:00" />
So, i got to convert my DVD to mpg, right?
What is the best format to convert to, to reduce quality loosing, and
still possible to edit?
> you can find better examples with menus, splash screens etc on the
> web.
I looked a lot, still found the same software for Gates' products...
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Best regards,
Strong.