PPWIZARD |
This is a free tool available from "http://dennisbareis.com/ppwizard.htm".
It is included in the MAKEMSI installation as PPWIZARD is what is invoked to build or update MSI files.
It is a very powerful preprocessor, it was used to create my whole web site and in fact the HTML or CHM (Windows Compiled Help) documentation you are now reading.
PPWIZARD's extensive documentation was also installed by MAKEMSI (and the MAKEMSI manual also has a small "Introduction to PPWIZARD" section):