I did everything as per the guidence. Here is my winnt.sif file. When I boot the CD, it says, line 14 of the inf file winnt.sif is invalid. Whats going on? Here it goes, ;SetupMgrTag [Data] AutoPartition=1 MsDosInitiated="0" UnattendedInstall="Yes" [unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall=Yes NoWaitAfterTextMode=1 NoWaitAfterGUIMode=1 TargetPath=\WINDOWS DriverSigningPolicy=Ignore OemPnPDriversPath=Drivers\sata;Drivers\videocard;Drivers\audio;Drivers\usb; [GuiUnattended] EncryptedAdminPassword=NO TimeZone=190 OemSkipWelcome=1 [userData] ProductKey=xxxxxxxxxxxxxxxxxxxx FullName="xxxxxxx" OrgName="xxxxxxxxxx" [Display] BitsPerPel=32 Xresolution=1024 YResolution=768 Vrefresh=60 [RegionalSettings] LanguageGroup=2,1 [GuiRunOnce] Command0=C:\OS\ROOT\$OEM$\$1\directx\setup.exe Command1=C:\OS\ROOT\$OEM$\$1\wmp\MPSetupXP.exe [identification] JoinWorkgroup=WORKGROUP [Networking] InstallDefaultComponents=No [NetAdapters] Adapter1=params.Adapter1 [params.Adapter1] INFID=* [NetClients] MS_MSClient=params.MS_MSClient [NetServices] MS_SERVER=params.MS_SERVER [NetProtocols] MS_TCPIP=params.MS_TCPIP [params.MS_TCPIP] DNS=Yes UseDomainNameDevolution=No EnableLMHosts=Yes AdapterSections=params.MS_TCPIP.Adapter1 [params.MS_TCPIP.Adapter1] SpecificTo=Adapter1 DHCP=Yes WINS=No NetBIOSOptions=0 [branding] BrandIEUsingUnattended=Yes [Proxy] Proxy_Enable=0 Use_Same_Proxy=0 --------------------------------------- And then I tried with this, ;SetupMgrTag [Data] AutoPartition=1 MsDosInitiated="0" UnattendedInstall="Yes" [unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall=Yes NoWaitAfterTextMode=1 NoWaitAfterGUIMode=1 TargetPath=\WINDOWS DriverSigningPolicy=Ignore OemPnPDriversPath="Drivers\sata;Drivers\videocard;Drivers\audio;Drivers\usb;" [GuiUnattended] EncryptedAdminPassword=NO TimeZone=190 OemSkipWelcome=1 [userData] ProductKey=xxxxxxxxxxxxxxxxxxxx FullName="xxxxxxxxxxxx " OrgName="xxxxxxxxxxxxxx" [Display] BitsPerPel=32 Xresolution=1024 YResolution=768 Vrefresh=60 [RegionalSettings] LanguageGroup=2,1 [GuiRunOnce] Command0=C:\OS\ROOT\$OEM$\$1\directx\setup.exe Command1=C:\OS\ROOT\$OEM$\$1\wmp\MPSetupXP.exe [identification] JoinWorkgroup=WORKGROUP [Networking] InstallDefaultComponents=No [NetAdapters] Adapter1=params.Adapter1 [params.Adapter1] INFID=* [NetClients] MS_MSClient=params.MS_MSClient [NetServices] MS_SERVER=params.MS_SERVER [NetProtocols] MS_TCPIP=params.MS_TCPIP [params.MS_TCPIP] DNS=Yes UseDomainNameDevolution=No EnableLMHosts=Yes AdapterSections=params.MS_TCPIP.Adapter1 [params.MS_TCPIP.Adapter1] SpecificTo=Adapter1 DHCP=Yes WINS=No NetBIOSOptions=0 [branding] BrandIEUsingUnattended=Yes [Proxy] Proxy_Enable=0 Use_Same_Proxy=0 Nothing seems to be working. I'm sick of the same error. Help me out folks!!!