Unfortunately, I'm still having this (similar) problem with reseal. I just keep getting the errors for missing files. It's starts off with the c_20127.nls which you can find already installed on the harddrive and the rest of the files are to be found in the i386 directory on the WinLite CD. I made sure I checked the box on the Compatibility box for Windows Activation and Sysprep, but it didn't change anything. Is there some setting that I've chosen that screwed up everything? Here's a incomplete list of those missing files (I just got tired of listing them by using a floppy):  2,520 8514FIX.FO_  3,146 8514OEM.FO_  2,802 8514SYS.FO_  4,800 AGT0407.DL_  4,828 AGT040C.DL_  4,450 AGT0410.DL_ 10,991 APP850.FO_  2,741 CGA40850.FO  2,633 CGA40WOA.FO  2,307 CGA80850.FO  2,289 CGA80WOA.FO  5,558 COURE.FO_  7,168 COURF.FO_ 66,082 c_20127.nls 11,099 DOSAPP.FO_  3,027 EGA40850.FO  2,977 EGA40WOA.FO  2,445 EGA80850.FO  2,463 EGA80WOA.FO 14,881 SERIFE.FO_ 18,135 SERIFF.FO_  7,419 SMALLE.FO_  7,399 SMALLF.FO_ 14,686 SSERIFE.FO_ 18,028 SSERIFF.FO_  2,467 VGA850.FO_  2,445 VGA860.FO_  2,481 VGA863.FO_  2,473 VGA865.FO_  2,089 VGAFIX.FO_  2,335 VGASYS.FO_ These are my options with sysprep:  Use Mini-Setup Detect non-plug and play hardware Reseal This is my nLite setup:  [Main] Env = 1.2.1 - 2.0.50727.42.Microsoft Windows NT 5.1.2600 Service Pack 2 Target = Windows XP Professional SP:2 - 5.1.2600.2180 - English (United States)  [Tasks] Remove Components Unattended Setup Hotfixes and Update Packs Tweaks Create a Bootable ISO Options  [Components] ;# Applications # Briefcase ;# Network # MSN Explorer Windows Messenger ;# Operating System Options # Blaster/Nachi removal tool Tour ;# Compatibility #  [KeepFiles] msconfig.exe  [RemoveFiles] clock.avi  [Options] CABNoHigh ClassicSetup ProfilesDir = "%SystemDrive%\Documents and Settings" TargetPath = "WINDOWS" temp_dir = %USERPROFILE%\Local Settings\Temp AdvTweaks NoISOPreset  [Patches] DoUxTheme DoSFC  [Services2]  [Tweaks] Desktop-Internet Explorer icon-Hide Explorer-Show Statusbar in all windows Explorer-Show the full path in the Address Bar Internet Explorer-Disable Market Place bookmark Internet Explorer-Disable Media Player 6.4 created bookmarks Internet Explorer-Disable Outlook Express link creation Internet Explorer-Enable Google URL-Search Internet Explorer-Set Homepage-www.google.com Internet Explorer-Set IE-Cache limit to-200 MB (default) Internet Explorer-Set popup-blocker to high Privacy-Remove Alexa Start Menu-Control Panel-Display as a menu Taskbar-Lock the Taskbar-Yes Visual Effects-Menu animation-Disable Visual Effects-Smooth edges of screen fonts-ClearType  [Unattended] ComputerType = Automatic MaximumDataStorePercentOfDisk = 10 RestorePointLife = 30 DesktopTheme = Windows XP style|Silver|Normal size IISInstall = 2 AutoUpdates = 1 AutoUDay = 4 AutoUHour = 3 ProgFilesPath = "\Program Files"  [GuiRunOnce]  [Drivers]  [Hotfixes] HotfixingReports WindowsXP-KB873339-x86-ENU.exe WindowsXP-KB885835-x86-ENU.exe WindowsXP-KB885836-x86-ENU.exe WindowsXP-KB886185-x86-enu.exe WindowsXP-KB887472-x86-enu.exe WindowsXP-KB888302-x86-ENU.exe WindowsXP-KB890046-x86-ENU.exe WindowsXP-KB890859-x86-ENU.exe WindowsXP-KB891781-x86-ENU.exe WindowsXP-KB893756-x86-ENU.exe WindowsInstaller-KB893803-v2-x86.exe WindowsXP-KB894391-x86-ENU.exe WindowsXP-KB896358-x86-ENU.exe WindowsXP-KB896423-x86-ENU.exe WindowsXP-KB896424-x86-ENU.exe WindowsXP-KB896428-x86-ENU.exe WindowsXP-KB898461-x86-ENU.exe WindowsXP-KB899587-x86-ENU.exe WindowsXP-KB899589-x86-ENU.exe WindowsXP-KB899591-x86-ENU.exe WindowsXP-KB900725-x86-ENU.exe WindowsXP-KB901017-x86-ENU.exe WindowsXP-KB901214-x86-ENU.exe WindowsXP-KB902400-x86-ENU.exe WindowsXP-KB904706-v2-x86-ENU.exe WindowsXP-KB905414-x86-ENU.exe WindowsXP-KB905749-x86-ENU.exe WindowsXP-KB908519-x86-ENU.exe WindowsXP-KB908531-v2-x86-ENU.exe WindowsXP-KB910437-x86-ENU.exe WindowsXP-KB911280-v2-x86-ENU.exe WindowsXP-KB911562-x86-ENU.exe WindowsMedia-KB911564-x86-ENU.exe WindowsXP-KB911567-x86-ENU.exe WindowsXP-KB911927-x86-ENU.exe WindowsXP-KB912919-x86-ENU.exe WindowsXP-KB913580-x86-ENU.exe WindowsXP-KB914388-x86-ENU.exe WindowsXP-KB914389-x86-ENU.exe WindowsXP-KB916595-x86-ENU.exe WindowsXP-KB917344-x86-ENU.exe WindowsXP-KB917422-x86-ENU.exe WindowsXP-KB917953-x86-ENU.exe WindowsXP-KB918439-x86-ENU.exe WindowsXP-KB918899-x86-ENU.exe WindowsXP-KB919007-x86-ENU.exe WindowsXP-KB920214-x86-ENU.exe WindowsXP-KB920670-x86-ENU.exe WindowsXP-KB920683-x86-ENU.exe WindowsXP-KB920685-x86-ENU.exe WindowsXP-KB921398-x86-ENU.exe WindowsXP-KB921883-x86-ENU.exe WindowsXP-KB922582-x86-ENU.exe WindowsXP-KB922616-x86-ENU.exe WindowsXP-KB922819-x86-ENU.exe WindowsXP-KB923191-x86-ENU.exe WindowsXP-KB923414-x86-ENU.exe WindowsXP-KB924191-x86-ENU.exe WindowsXP-KB924496-x86-ENU.exe WindowsXP-KB925486-x86-ENU.exe RVMAddonsWGA_1.5.708.0.7z WMP11.7z ProgramAddons Firefox 2.0.cab aawsepersonal.cab spybotsd14.cab And this is my sysprep.inf:  ;SetupMgrTag [Unattended] 	InstallFilesPath=C:\sysprep\i386 	TargetPath=\WINDOWS  [GuiUnattended] 	EncryptedAdminPassword=NO 	OEMSkipRegional=1 	OEMDuplicatorstring="DUIRT WinLite 20061118" 	TimeZone=35 	AutoLogon=Yes 	AutoLogonCount=1  [UserData] 	ProductKey=REMOVED 	FullName="" 	OrgName="Drexel University"  [TapiLocation] 	CountryCode=1  [Identification] 	JoinWorkgroup=DREXEL  [Networking] 	InstallDefaultComponents=Yes  [RegionalSettings] 	LanguageGroup=1 	Language=00000409  [Branding] 	BrandIEUsingUnattended=Yes  [Proxy] 	Proxy_Enable=0 	Use_Same_Proxy=0