thx for the fast reply, here's my winnt.sif file, as you can see OemPreinstall="Yes", maybe it should be without "quotes"? [Data] Autopartition=1 MsDosInitiated=0 UnattendedInstall="Yes" AutomaticUpdates="Yes" FloppyLess=1 [Unattended] UnattendMode=FullUnattended OemPreinstall="Yes" OemSkipEula="Yes" TargetPath=\WINDOWS FileSystem=* UnattendSwitch="yes" WaitForReboot="No" DriverSigningPolicy=Ignore OemPnPDriversPath="drivers\000_Net;drivers\001_hdc;drivers\002_MEDIA;drivers\003_display;drivers\004_Printer" NoWaitAfterTextMode=1 NoWaitAfterGUIMode=1 Hibernation="No" KeyboardLayout="US" [GuiUnattended] AdminPassword=* EncryptedAdminPassword=No OEMSkipRegional=1 TimeZone=135 OemSkipWelcome=1 [UserData] ProductKey="XXXX-XXXX-XXXX-XXXX-XXXX" FullName="Yaniv" OrgName="Home" ComputerName=desktop [Display] BitsPerPel=32 Xresolution=1280 YResolution=1024 Vrefresh=85 AutoConfirm=1 [Components] [Shell] CustomDefaultThemeFile ="%WinDir%\Resources\Themes\LE5.theme" [RegionalSettings] LanguageGroup=1,12 Language= "0409" [Networking] InstallDefaultComponents="Yes"