I will invite Freelancers to this project. Invite only thanks.
Create an installer program to associate icons with file types on Windows XP through to Windows 10 (and 98 too if possible).
Do not associate the file types with any programs and do not remove any existing associations.
Allow the user to choose which associations to make when installing (provide a checkbox for each icon when installing).
I'll provide an example of the look of the interface soon.