if its home made dvd & you just want it to mp3 files mean try this
just drop & drop you file to this FFactory & select all to MP3
i will do the rest for you
Format Factory
http://www.formatoz.com/
if you want to rip dvd video then try
http://handbrake.fr/(for move output formats get previous version 0.9.3 from Filhippo.com)
if its an audio dvd ,i'm sorry i never used it..