see this topic
https://fileforums.com/showthread.php?t=99227
thats all you need to make an installer. Download the archive in first post, then look in the archives subfolders, as how the images
are named/sizes etc. Then you enter in the information for your program in setup.ini & you have an installer for it.
Here's the online wiki that explains all the settings.ini information as well
https://www.fileforums.com/showthread.php?t=99330
have any questions, post them in the link for the first topic i mentioned, or PM for help if needed.