Even better: save it with the name DNF20.REG and place it in the root of the 7zip sfx archive (use 7zip split and 7zip for this) I have used this content, thank to zorro: REGEDIT4 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\DC3BF90CC0D3D2F398A9A6D1762F70F3\Patches] "AllPatches"=hex(7):39,45,30,44,45,38,39,32,39,33,46,45,39,42,42,33,33,38,39,\ 38,46,32,34,45,44,31,38,43,43,46,30,38,00,00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\DC3BF90CC0D3D2F398A9A6D1762F70F3\Patches\9E0DE89293FE9BB33898F24ED18CCF08] "MSI3"=dword:00000001 "State"=dword:00000001 "Uninstallable"=dword:00000001 "LUAEnabled"=dword:00000000 "PatchType"=dword:00000000 "Installed"="20091016" "DisplayName"="KB974417" "MoreInfoURL"="http://support.microsoft.com/kb/974417" works flawless with snmsynth 20090922.