To answer your last question first, DVDs cost very little so I would be happy to send you a copy when it is ready or, if the iso file is not too big, I might put it on my server (the bandwidth is limited but it might still be quicker than the postal service).

What I am really aiming for is an easy-to-follow recipe allowing anyone to create the DVD/USB image. Once created, it would be reasonably easy to use and copies could be given to anyone who wants to try it. Unlike a normal live CD, it would also be easy for you to install any additional software you want from the Debian package repository, as well as examples, help pages, whatever.

the possibility of inserting geogebra sessions in the texmacs document, i mean inserting geometric dynamic figures in the Texmacs document. I know that geogebra is written in java, while texmacs.. is not. But this option would ideally be very very interesting

Someone would have to write a Texmacs plugin for this. You could also try Texgraph, it looks very good and there is now a Texmacs plugin for it. See

http://texgraph.tuxfamily.org/index.html for more info.

- i have just asked the "personne ressource" of my lycee, if he has a (.iso) of Ubuntu and Debian. Paul you have convinced me to use Debian 4.0

The full Debian system, with all packages, comes on 4 DVDs totalling 15GB !!! I normally install Debian using the "net install" CD. This is a small CD iso image (150MB approx) which you can download from www.debian.org. You boot the computer (real or virtual) from this and it allows you to install Debian from the Internet (or from a local Debian mirror). I find this way to be the most convenient installation method, but you need broadband/DSL or an on-site Debian mirror.

- on this liveware, ideally, the good version of ghostscript would be installed.

This is partly why I shall use Debian 4.0