Custom 404 Error Page

First make a layout or just an image or a plain html page that you want to use as the 404 error page. Save it as 404.html. Open notepad and type this :

ErrorDocument 404 http://www.yoursite.com/404.html

If you already have a .htaccess file, just add the above line on top of everything in that file and save it. Change the "yoursite.com" to your domain name. Save this file as .htaccess and upload both the 404.html and the .htaccess file to the root directory of your site via FTP. To check if your custom error page is working, type any nonexistant url of your site for example : http://yousite.com/abcd.html or http://yoursite.com/blah or http://yoursite.com/404.html

You should see your custom error page showing up there. If its not, try reading the tutorial again.

Good luck!