DistroWatch Weekly introduces us to a Spanish language website detailing the steps (with screenshots) of creating a LiveDVD capable of booting multiple LiveCDs. It’s in the third paragraph down.
All you need to do is to download the ISO images of those distributions that you’d like to have on the live DVD, place them into correct directories, set up GRUB’s menu.lst, and execute a script.
It is a great post. I think it is good idea to try it ad to send the author comments to improve.
This kind of things only can take place with free software. Nothing to compare to proprietary OSs, that need you to fix their soft into a hard disk in order to avoid free copies and tax you for use it.
My project is more modest, but in the same direction. Please visit: http://www.terra.es/personal2/jnvtdr.
Regards.
*JT.