I think it's enough to unhide the file extensions. That's one of the first default settings I change as soon as I have a new Windows PC.
http://www.sevenforums.com/tutorials/10570-file-extensions-hide-show.html tells how (via Organise inWindows Explorer, no need at all to use regedit)
I need to use graphics to explain what I'm talking about:
I don't know why one is saying "Microsoft PictureIt! Document". I do use PictureIt! for all my pictures, but I would rather see the type of picture it is - jpg, jpeg, or png.
How/where do I change this?