Using the runonce system I have used these commands and it works fine. No need to add registry setting or copy and paste lic files. Works with V6.0667000
REG ADD %KEY%\137 /VE /D "Zonealarm 6" /f
REG ADD %KEY%\137 /V 1 /D "%CDROM%\install\Apps\Zone_Alarm_6\zapSetup60667000.exe /s /noreboot /lickey xxxxx-xxxxx-xxxxx-xxxxx-xxxxx" /f
REG ADD %KEY%\137 /V 2 /D "%CDROM%\install\Apps\Zone_Alarm_6\config.xml