Go to this address : http://www.ubuntulinux.org/ and click the link, they even pay the shippement fees!!!!!!!!!!!!! You can request as much cds as you want for any architechture that you want (x86, PPC or AMD64) and they'll send them to you for free!!!!!
Full address, Name and organisation. Allow 4-6 weeks to recieve your order Remember, it's FREE, they even pay the shipement(spelling?) fees