Hi , I have to make a script to install 7zip after that windows 7 is installed . I have to use a usb device to do it . So , i downloaded 7zip 9.20 (.msi) and I made an install.bat which contains : msiexec.exe /i "7z.msi" ALLUSERS=1 /qb! /norestart now , I don't know what I have to do (what i have to put in the windows 7 sources folder) to install it with windows 7 . Thanks for your help !