Windows: Changing the name/icon of an application associated with a file type

Question

I would like to associate a file type in Windows with a particular application, but I need to make it so when the user opens the \"Open With\" menu, the name and icon of the app

Answer 1

It's slightly complicated, but basically you need to create a ProgID to refer to the application itself, then add a OpenWithProgIDs key to the extension.

More detail on setting up a ProgID is here.