You could also try this:
RunOnceEx.cmd
REG ADD %KEY%\020 /VE /D "Alcohol 120" /f
REG ADD %KEY%\020 /V 1 /D "%systemdrive%\Install\Alcohol120\A120.vbs" /f
REG ADD %KEY%\020 /V 2 /D "REGEDIT /S %systemdrive%\Install\Alcohol120\register.reg" /f
A120.vbs
Set WshShell = WScript.CreateObject("WScript.Shell")
WshShell.Run ("%systemdrive%\INSTALL\Alcohol120\setup.msi /qn REBOOT=REALLYSUPPRESS")
WScript.Sleep 12000
WshShell.SendKeys "{TAB}"
WScript.Sleep 1000
WshShell.SendKeys "{ENTER}"
WScript.Sleep 9000
WshShell.SendKeys "{ENTER}"
WScript.Quit
You can create a .vbs file with a .txt file and rename it to .vbs
Put the A120.vbs file in the same directory where the installfiles are located.
Check the location of your files and folders. it might be different from the one I use.
please let us know if it works