Here is a quick inf file which should be able to invoke Active Window Tracking from an unaltered state. AWT.inf [Version] Signature = $Windows NT$ [SourceDisksNames] 95 = %DISKNAME% [SourceDisksFiles] %THISFILE%.inf = 95 [DestinationDirs] Inf.Copy = 17 File.Del = 17 [DefaultInstall] AddReg = Reg.On, Reg.Uninst BitReg = Set.Bit CopyFiles = Inf.Copy [DefaultUninstall] AddReg = Reg.Off BitReg = Clear.Bit DelFiles = Inf.Copy, File.Del DelReg = Reg.Del, Reg.Uninst [Reg.On] HKCU,"Control Panel\Mouse",ActiveWindowTracking,0x10001,1 HKCU,"Control Panel\Mouse",SnapToDefaultButton,,"1" HKCU,"Control Panel\Desktop",ActiveWindowTracking,0x10001,1 HKCU,"Control Panel\Desktop",ActiveWndTrkTimeout,0x10001,1000 [Reg.Uninst] HKLM,"%UNINSTAL%\%DESCNAME%" HKLM,"%UNINSTAL%\%DESCNAME%",DisplayName,,"%DESCNAME%" HKLM,"%UNINSTAL%\%DESCNAME%",UninstallString,,"%REMOVCMD% %THISFILE%.inf" [Set.Bit] HKCU,"Control Panel\Desktop",UserPreferencesMask,1,0x41,0 [Inf.Copy] %THISFILE%.inf [Reg.Off] HKCU,"Control Panel\Mouse",ActiveWindowTracking,0x10001,0 HKCU,"Control Panel\Mouse",SnapToDefaultButton,,"0" HKCU,"Control Panel\Desktop",ActiveWndTrkTimeout,0x10001,0 [Reg.Del] HKCU,"Control Panel\Desktop",ActiveWindowTracking [Clear.Bit] HKCU,"Control Panel\Desktop",UserPreferencesMask,0,0x41,0 [File.Del] %THISFILE%.PNF [Strings] ; Non-localizable DISKNAME = "Setup Files" UNINSTAL = "Software\Microsoft\Windows\CurrentVersion\Uninstall" REMOVCMD = "rundll32 setupapi,InstallHinfSection DefaultUninstall 132" ; Localizable THISFILE = "AWT" DESCNAME = "Switches on Active Window Tracking"It is untested however!