I've tried using my DVD recorder to record my vids but I can't get it too work. So instead I use a dazzle, a scart switching box, a set of RCA cables, a scart plug and a scart connector which you should have if you have a Xbox 360.
Doing it this way you can still use your TV to see what you're doing instead of using this pathetic little screen on your computer >_> This also splits the connection so that the quality of the audio and picture are perfect :) as demostrated here on one of my last vid. You can check out my other vids to check the quality but I would advise to not see the early ones as youtube changed over the months and they look terrible. Just see the latest ones.
http://www.youtube.com/user/FlyingfoxUK#p/a/u/0/TW7EK2AeeRMI have used my GC, Wii and my Xbox 360 on this. You can swtich between PAL and NTSC and you can record your vids as MP3, MP4 or AVI. I hope that was useful to you :)