That screen is just an example of what your command should look like. It has no basis on the actual command and is like you said unchange-able. you use the command you wnat "setup.exe TRANSFORMS=Unattended.MST /qb-" in you runonce or other entry... Your wpi config line should read like so: cmd1[pn]=['%cdrom%\\Install\\Office2k3\\setup.exe TRANSFORMS=Unattended.MST /qb-!']