Multiple cds to dvd

I am a linux user, and am wanting to try freeBSD 7. I downloaded the 3 install discs and the docs disk. I need to put these on a single dvd. Everything that read refered to games and said it couldn’t be done (maybe I just never found the right tread). I did find a way to do this in bsd. I just need a way to do this in linux.

Here are the links.
(sorry don’t know if these will link, may have to copy and paste)

I may have answered my own question. I will try this and see if it works and repost the results later today.