RegFromApp

RegFromApp monitors the Registry changes made by the application that you selected, and creates a standard RegEdit registration file (.reg) that contains all the Registry changes made by the application.

You can use the generated .reg file to import these changes with RegEdit when it's needed.
This utility works on Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, and Windows 7. Older versions of Windows are not supported. There is a separated version for x64 applications.