Fill in all the form fields. If possible, include a description of the file extension to be added as well as programs that support it. Our specialists will review your submission and will decide whether to add a file to our database.
File extensions are not normally displayed to users. To change this, go to Control Panel, select Appearance and Personalization and Folder Options. Next, select the View and find the option "Hide extensions for known file types". The option should be deselected (cleared) and confirmed with OK.