Some time ago I have successfully installed CentOS 5.5 on my headless server (you can read the guide in older posts).
Now I would like to upgrade the box to Ubuntu distro. After several tests and several cds toasted I can release this practical guide to have a bootable CD configured to use serial console as input/output.
My setup is based on Ubuntu Server 10.10 32 bit, 9600 8n1 serial console and a Samsung USB CD/DVD writer.