I created a script to make a livecd/dvd remaster of an Ubuntu and derivative system.

If you want to know more about it or give it a shot, here is the main wiki page for it:

http://www.linuxmint.com/wiki/index.php/Remastersys

Clem the founder of Linux Mint is hosting everything for me.

It should work on Dapper versions and Edgy right now. Haven't taken a look a Feisty yet but I will in the near future.