I'm sorry if this is the wrong place, I'm posting here since the W2K3 section mentions the similarities to XP. Thanks to many of the tips posted here, I have my unattened XP disk working great. Now I need to do the same for W2K3 Server Standard. The source CD is from MSDN as is the Product Key. Installing using the CD and Product Key works fine. When I try an unattended install, Setup thinks that the install is an Upgrade and wants a Windows 3.51, NT 4.0 or W2K server disk in the cd to verify that the upgrade qualifies. I ran setupmgr to create a new winnt.sif and made sure there were no winnt.si_ files anywhere. Any thoughts. Thanks Here is my winnt.sif: ;SetupMgrTag [Unattended] Unattendmode=FullUnattended OemPreinstall=Yes TargetPath=\WINDOWS Filesystem=LeaveAlone NoWaitAfterGUIMode=1 DriverSigningPolicy=Ignore Repartition=No OemSkipEula=Yes OemPnPDriversPath="DRIVERS\AUD;DRIVERS\MDM;DRIVERS\NET1;DRIVERS\NET2;" UnattendSwitch = Yes AutoActivate = No [Data] UnattendedInstall="Yes" MSDosInitiated="0" AutoPartition=1 [GuiUnattended] AdminPassword="admpass" EncryptedAdminPassword=No OEMSkipRegional=1 AutoLogon=Yes AutoLogonCount=1 OemSkipWelcome=1 TimeZone="035" [RegionalSettings] LanguageGroup=1 Language=00000409 [UserData] FullName= OrgName= ComputerName=ITSetup ProductKey=[** MSDN Key **] [Branding] BrandIEUsingUnattended = Yes [URL] Home_Page=http:// [Networking] InstallDefaultComponents=Yes [Identification] JoinWorkgroup=WORKGROUP [Display] BitsPerPel=16 Xresolution=1024 YResolution=768 Vrefresh=70 [LicenseFilePrintData] AutoMode=PerSeat [Shell] DefaultStartPanelOff = Yes DefaultThemesOff = Yes [GuiRunOnce] Command0=%systemdrive%\install\main_run.cmd