Changing "UnattendMode=ProvideDefault" to "UnattendMode=FullUnattended" results in an error because I haven't provided all the info in winnt.sif. I also don't want to provide all the info in it. I intend to use the CD on multiple computers, and like being reminded to set certain things. I just don't feel the CD key reminder is necessary, heh. I tried changing "UnattendMode=ProvideDefault" to "UnattendMode=DefaultHide", and it didn't work, either (although I didn't get an error). Of course, now I seem unable to use any sort of UnattendMode, without getting the following error: Line xx of the INF file \i386\winnt.sif is invalid Line xx is always an empty line after "InstallDefaultComponents=Yes". If I delete all empty lines, it is the InstallDefaultComponents line. any ideas as to what might be causing this? finally, i've been creating ISO's using Nero, but having to create a new ISO image every time i want to update the UnattendMode line of winnt.sif seems a bit overkill. is there some ISO utility that will allow me to edit ind. files, and place them back into the image? I tried WinRAR, to find out it doesn't write to ISO files, and WinImage, to find out that it can't insert because the image is full (whatever that means)...