This problem is driving me gradually insane... Every attempt i've made so far at following yr excellent tutorial has resulted in files being modified but no additions being made. In other words, if i try to add anything to install.wim, such as themes of sidebar gadgets, then no changes are made. When i install and check those folders - they are empty. However, any chages i've made to existing files, eg - user account .bmp files and logon screen, are ok. Any suggestions would be most welcome.