Install the SystemImager server package on the machine you have chosen as your image server.
Install Linux on your "golden client", and customize as you desire.
Install the SystemImager client software on your "golden client" and run the prepareclient command.
Run getimage on the image server to pull the image from the "golden client" to the image server.
Run addclients on the image server to tell it which clients will receive which image, and to populate the image server's /etc/hosts and /tftpboot/systemimager/hosts files.
Choose and configure the method for assigning IP addresses to your autoinstall clients.
Autoinstall the "golden" image on other machines.