First thing's first... You will need some sort of captureing device on your computer... ATI AIW cards, or a stand alond video capture device. You first capture the video to your PC, if you want a DVD that you can play on your DVD player, and not just transfer the mpeg files over for play on ur PC, you will also need software to author your own DVD. I use nerovision for that.
There is a LOT of information here...
http://www.dvdrhelp.com/