Alright, I am running out of ideas here. my cmdlines.txt file looks like
this.

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[Commands]

"Regedit /s C:\Windows\ZMG\InitialSetup.reg"

"C:\WINDOWS\system32\msiexec.exe /i C:\ADDON\zfdagent\ZfDAgent.msi /qn
STARTUP_APPWINDOW=1 ZENWORKS_TREE=NORTH"

"C:\ADDON\Client491SP3\acu.exe /d:no /u:SP3_120706.txt /SL"

"Regedit /s C:\Windows\ZMG\winlogon2.reg"

"C:\Sysprep\sysprep -clean"
-----------------------------------------------------

No matter what I do, the zen7 installer is not starting. It seems like it
just skips right over to client, which installs fine.
Thanks guys