You just need to convert your DVD movie or video to mp4 video, and then you can drag the mp4 video into your iTunes library. Plug in your iPod to computer, iTunes will detect the iPod automatically, then click iTunes menu "File -> Sync iPod", that's all. If you need details, here is a step by step guide would help you a lot, it's easy to understand and works pretty well for me
http://www.dvdintoipo...vd-video-to-ipod.html
Hope it helps. Feel free to email me if you need further help.