Not really sure how to do that . Is there any way I could disable the mouse and keyboard during runonceex? If it helps, this is my runonceex.inf file [Version] Signature=$CHICAGO$ [DefaultInstall] AddReg = RunXP [XP] AddReg = RunXP [RunXP] ;http://support.microsoft.com/?kbid=232509 HKLM,"%RunOnceEx%\",Title,0,"Installing Windows XP Ultimate" HKLM,"%RunOnceEx%\",Flags,0x00010001,20 HKLM,"%RunOnceEx%\install01",,,".NET Framework AIO" HKLM,"%RunOnceEx%\install01",1,,"%24%\Install\DOTNETAIO\dotnetfx.exe" HKLM,"%RunOnceEx%\install01",2,,"%24%\Install\DOTNETAIO\SP3.exe /Q" HKLM,"%RunOnceEx%\install01",3,,"%24%\Install\DOTNETAIO\dotnet11SP1.exe" HKLM,"%RunOnceEx%\install01",4,,"%24%\Install\DOTNETAIO\netfxAIO.exe" HKLM,"%RunOnceEx%\install02",,,"Media Center Edition 2005 Components" HKLM,"%RunOnceEx%\install02",1,,"rundll32 setupapi.dll,InstallHinfSection Freestyle 128 medctroc.inf" HKLM,"%RunOnceEx%\install03",,,"Windows Digital Media Enhancements" HKLM,"%RunOnceEx%\install03",1,,"%24%\Install\Batch\Plus.cmd" HKLM,"%RunOnceEx%\install04",,,"Sonic CD and DVD Burning Engine" HKLM,"%RunOnceEx%\install04",1,,"rundll32 setupapi.dll,InstallHinfSection SonicDVDandCDBurning 128 sonic.inf" HKLM,"%RunOnceEx%\install05",,,"Tablet PC Edition 2005 Components" HKLM,"%RunOnceEx%\install05",1,,"rundll32 setupapi.dll,InstallHinfSection TPG 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",2,,"rundll32 setupapi.dll,InstallHinfSection System 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",3,,"rundll32 setupapi.dll,InstallHinfSection OOBE 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",4,,"rundll32 setupapi.dll,InstallHinfSection Notebook 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",5,,"rundll32 setupapi.dll,InstallHinfSection StickyNotes 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",6,,"rundll32 setupapi.dll,InstallHinfSection AllShortcuts 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",7,,"rundll32 setupapi.dll,InstallHinfSection SRInstall 128 tabletpc.inf" HKLM,"%RunOnceEx%\install05",8,,"rundll32 setupapi.dll,InstallHinfSection AllReg 128 tabletpc.inf" HKLM,"%RunOnceEx%\install06",,,"Repairing Components" HKLM,"%RunOnceEx%\install06",1,,"%24%\Install\Batch\TabFix.cmd" HKLM,"%RunOnceEx%\ZZCleanup",,,"Cleaning up And Rebooting" HKLM,"%RunOnceEx%\ZZCleanup",1,,"%11%\cmd.exe /c rd /S /Q %24%\Install\" HKLM,"%RunOnceEx%\ZZCleanup",2,,"%11%\cmd.exe /c shutdown -r -t 00" [Strings] RunOnceEx = "SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnceEx" It follows the method here to the letter (http://gosh.msfn.org/using_runonceex.htm) This inf successfully installs Media Center and TabletPC components on XP Pro, as long as the proper reg entries are added. (XP Ultimate)