Look under the edit section.
Any of the guides for "Removing Commercials" are appropriate. If you can
remove a 'commercial', you can remove anything else.
You are simply removing everything BUT the material you want to keep.
OR.
Other possiblities
Gordian Knot
http://www.rita.lt/guides/GKnot_DVDtoAVI.htm
Or
www.videohelp.com
examine sections on DVD backup.
Or
Here is a tutorial that gives step by step for Mpeg Video Wizard.