Install Server

I am using AutoYaST and an Installation Server for SLES 9. I want to offer SLES9 and SLES9SP1. What is the best way to make SP1? Install SLES9 again and then add CDs? Copy SLES9 to new directory and configure it and then add CDs Start w/ SLES9SP1 CD1 for first CD and go through all 9 CDs? Thanks