If it was recorded on a dvd recorder, it should be in dvd-video format. You can move the dvd files onto the hard drive to work with them. Since they aren’t encrypted, you can use any ripping program (like DVDDecrypter or DVDShrink) or simply right click on the drive with the dvd disk, hit Explore, then drag and drop the Video_TS folder to where you want it on the hard drive.
Editing dvd-video is the harder part. What all do you want to do with the files…cut out sections, make transitions, make menus? Simple cuts at the ends of the video are easy to do with DVDShrink in ReAuthor mode. More complex editing requires a more specialized tool, like VideoRedo TV Suite, or Womble Mpeg Video Wizard DVD, neither of which are free, but there are trials available for download.
VideoRedo and Womble are easy to find using Google. DVDShrink and DVDDecrypter can be found at www.mrbass.org