Making a LiveCD?

Hello group,

Does anyone know of a tool for making a LiveCD distribution of Linux based on an existing system?

We have a couple of applications for a LiveCD, the coolest being a nice auto-running demo CD that will run a presentation on boot (yes, we could do it with Flash and Windows auto-starting, but we don't want that, and besides, it wouldn't be Linux). We're looking to build some tweaked systems based on an existing setup.

With all the live CD distributions that are appearing, there must be some relatively obvious tools for making them, but Googling for "Linux LiveCD" or even "Linux LiveCD builder" generates an impressively long list of LiveCD distributions, but no info that I could find on making them. :-)

So in short, what we're looking for, is to take an existing Linux box (could be based on RedHat, Mandrake, SuSE, Debian, whatever), and create a bootable, runable CD that duplicates that box.

Thanks for any suggestions or tips!

Bill