The goal is to make a playstation 2 work as if it were a regular computer machine.
From the references there is a lot of info how to install but no really understand the step to actually make the CD or install the O.S. on a hard-drive. Since the larger PS2 do not have a hard-drive the network card will be needed inorder to install one. There are currently two types of O.S. for the Play-station that are well know for compatibility. Other Linux OS are possible but some special configuration is needed.
http://en.wikipedia.org/wiki/Linux_for_PlayStation_2
http://kernelloader.sourceforge.net/linux.html
http://linuxdevcenter.com/pub/a/linux/2004/03/25/ps2_linux.html