Alright, I am making an unattended XP disc for my new sexy PC. I want windows to install its program files into a directory named Programs inside the windows directory. After the windows installation is done though, I want the default program installation directory to be %systemdrive%/Applications. Here is what I was thinking of doing so far: 1). In my winnt.sif file, have the ProgramFilesDir set to "\Windows\Programs" (and have CommonrogramFilesDir set to "\Windows\Programs\Common"). 2). At first startup, use GuiRunOnce (set up in winnt.sif) do some registry tweaks and whatever else is necessary. The thing I am not sure about is, in step 2, what changes I have to apply to the registry, if it is possible to set the registry entry for the program files directory using %systemdrive%, and if I have to do anything else to get this working. Any help here would be greatly appreciated, and since this is my first post here on the MSFN forums, feel free to bash me on the head if I posted this in the wrong place or I didn't look well enough for an answer.