Single Page 404

Hey everyone,

I am trying to get a 404 error page to display without a sidebar. I have an image for the page but it’s to big for the sidebar. It is find if you go directly to it, http://thesoniczone.net/wp/404 but if you go to a broken link, http://thesoniczone.net/wp/bad-page you get the side bar.

Doe anyone know how I can make a 404 error show up without a sidebar on any page that is a broken link?