I followed this from the Kalyway thread and it worked on Zephyroth DVD/
Boot using "-s"
then type "/sbin/mount -uw /"
"passwd root"
Type any password you want
"touch /var/db/.AppleSetupDone"
"reboot"

and login with root and the password you choose then make an account for yourself..

It skips the entire Startup Assistant thing...

Worked good for me..