Thread:Project:Support desk/Custom 404 page on nonexistent article

Hi - I am using MediaWiki as a CMS, so I am the only person who can edit it. If anyone visits an article that does not exist, I would like a custom (HTML) page displayed instead of the standard "this article does not exist" page. Is it possible to configure MW to display a custom page if an article does not exist? (I am happy to create new pages by editing existing ones and adjusting the URL accordingly.) Thanks!