If you have not used the automated installer before, review the Automated Installer Task Map at: http://dlc.sun.com/osol/docs/content/2009.06/AIinstall/tasks.html
If you have already set up an install server, you can go to the instructions on how to Administer an Automated Install Server at: http://dlc.sun.com/osol/docs/content/2009.06/AIinstall/administer.html
Setup the install client image on the Automated Install Server, described at: http://dlc.sun.com/osol/docs/content/2009.06/AIinstall/client.html