I cannot find my guide on how to do this anymore. There was a guide that showed you what files that can be modded and how to use DISM to mount the install.wim and such. Does anyone know where I can find this document or one similar? Is there any way to slipstream a folder into the root of the Windows 7 install disk? I want to put a folder that I can put files in that can be accessed via the media after installation. This folder would be full of documentation, specialized patches and installers. Thank you for your help!