Hi, Here is an exemple of my winnt.sif file [Unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall=Yes TargetPath=\WINDOWS ProgramFilesDir="D:\Program Files" CommonProgramFilesDir="C:\Program Files\Common" UnattendSwitch=Yes WaitForReboot=No DriverSigningPolicy=Ignore [GuiUnattended] AdminPassword="password" EncryptedAdminPassword=NO AutoLogon=Yes AutoLogonCount=1 OEMSkipRegional=1 TimeZone=105 OemSkipWelcome=1 ProfilesDir="E:\Documents and Settings" The partitions must be created and formated before installation. You can also rename the "Documents and Settings" folder name if you want. I never tried with an another partition for the "Program Files\Common" folder.