Thank you 5eraph, i'd like to ask you one more thing. I think it is possible to add reg entries in the nlite.inf file but i don't know how. For example if you choose to don't hide file extension for known file types nlite.inf has this line in the [CT] section: HKCU,"SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced","HideFileExt",0x00010001,0 If i don't set this option in nlite the extension are hidden by default and that's ok. If i choose to manually change this thing in the explorer folder option i can see my reg and find: HideFileExt 0x00000000 (0) My question is why does nlite use 0x00010001,0 instead of 0x00000000,0 ? I'm asking this to be able to edit nlite.inf file to add other reg entries that you can't set in nlite program and i thought i can use the same syntax with the reg entries i need but i'm in trouble because looking at the registry give me a 0x..... different from the one i find in nlite.inf Can you help me? Thanks