Help installing Norton Internet Security 2007 silently

[s.stormont]

I was able to install Norton Internet Security 2006 silently using this command in WPI:

%CDROM%\Software\Apps\NIS\SymSetup.EXE /O REBOOT=ReallySuppress /qb

When I use the same command to install Internet Security 2007, I get a window that pops up on reboot that says:

cfgwiz

Failed to launch _tInternalWinMain

OK

Has anyone silently installed NIS 2007 successfully?

[s.stormont]

Guess it can't be done?