The closest thing I know that you can do is to change the Windows Explorer option. Open Windows Explorer. Go to Tools -> Folder Options. Click the View tab. Not too far down you will see Hide extensions for known file types. Check the box by that. Then when you go to download a file, and it asks you where you want to put it, the extension isn't shown. But it will still show the extension when the download window first pops up to ask you whether you want to run it or save it. This is showing the name of the file. As far as I know, this is the closest thing you can do to what you want.