This topic has possibly already been covered, but I just wouldn't know what to search for. I am aiming to alter a couple of files on my WinXP install disk, saving me the trouble of changing them after installation. I know it can be done, I have seen it, I just don't know where! When you install XP it checks the files integrity against a list contained in the "Layout.inf" contained in the "i386" folder, and in another file...Does anyone know that other file?? Also, can anyone tell me the meaning of the flags contained in the layout.inf file e.g: ntgrip.sys = 1,,51552,,,,,,3,3 nthelp.chm = 1,,20427,,,,,21,0,0 ntimage.gif = 1,,48794,,,,,2,0,0 (I believe that the middle set of numbers is the file version, backwards! ) I eagerly anticipate your help, many thanks. p.s. It matters NOT what the files are, they are purely aesthetic!!