Modular LiveCD?

[Mauricio Hernandez]

<snip>

well, If I understand correctly... dsslive project is what you are looking for.

Daniela Favara, aka nomed, is the leader of such project and he's
working very closely helping on Xubuntu and Elive projects.

Dsslive is a framework who does magic on liveCD creation and customizations.

iirc, www.dsslive.org, or else, irc.freenode.net, at #dsslive or #xubuntu

Oh, and when you contact him, please say hi to him from me (/me has
been kind of "away" for last 10 days or so) :D