If found, remove the entry. If you dont have a .reg file tweak applied during setup, you will need to search through the nlitehive.inf and nlite.inf files saved in the I386 source for any registry line entry simular to the above and edit it out. You may have also removed something during nlite process that may have affected the theme service in some way. thankx for reply... But i'd only one file nlite.ini and even this entery isn't in it..i m surprised why this happened... can someone provide the tested uxtheme.dll file my winnt.sif file details is also here mu uninstallswitch is off and it bypass the user creation [Data] AutomaticUpdates = "No" Autopartition = 0 UnattendedInstall = "Yes" MsDosInitiated= No [unattended] UnattendMode = FullUnattended UnattendSwitch = "No" OemSkipEula = "Yes" FileSystem = * WaitForReboot = "No" NoWaitAfterTextMode = 1 NoWaitAfterGUIMode = 1 DriverSigningPolicy = Ignore NonDriverSigningPolicy = Ignore OemPreinstall= Yes [Display] Xresolution = 1024 Yresolution = 768 BitsPerPel = 24 Vrefresh = 60 [systemRestore] [setupParams] SkipMissingFiles = "No" [GuiUnattended] EncryptedAdminPassword = "No" AdminPassword = * TimeZone = 205 OEMSkipRegional = 1 OemSkipWelcome = 1 [Components] [userData] ProductKey = "xxxxx-xxxxx-xxxxx-xxxxx-xxxxx" ComputerName = BHULLARXP FullName = * [RegionalSettings] LanguageGroup = 13,17,3,2,5,16,4,12,15,7,8,10,11,9,6,14,1 Language = "0409" [Networking] InstallDefaultComponents = "Yes" [identification] JoinWorkgroup = "workgroup" [GuiRunOnce] %systemdrive%\INSTALL\start.cmd [shell] CustomDefaultThemeFile ="%WinDir%\Resources\Themes\BhullarXP.theme" please tell me if there something wrong in winnt.sif file... cz. everytime i test in vmware.. the theme service is auto disabled