Well, here's what i do. I do it on a Mac, so if you have a PC, sorry, but some of it apply's to both.
Ok, to straight rip if off the dvd, I use this program called HANDBRAKE, I think i got it off a torrent site, it wasn't hard to find. It basically turns the whole video into one file. You have pretty good control of the size and compression and all that, but some if it might take some trial and error.
But if you want to log the footage so that you can edit it, like log it clip by clip, then what i do is hook my DVD player up to my video camera through the RCA cable, and then hook the camera up to the computer through firewire. If you are using Final Cut Pro, then when you log the footage you have to make sure that it is set to 'non controlled device' or something like that. I dunno, if you have PC, then I'm sure Adobe Premiere could probably do it as well.
The way i heard about HANDBRAKE was at Yahoo Answers. I'm sure if you asked for PC help someone would give you some better advice then what I'm giving you.