I go you learn how to make your own 404 error page's.
My own 404 error page:
click here.
You make a new file in a text-editor (frontpage etc)
Plug the next code in the new file:
ErrorDocument 404 http://www.yourdomain.com/404.php
Save as: htaccess.txt.
You upload it on your server (root)
You must rename it in:
.htaccess with the dot.
You make a new file on.
You make your own 404 error page.
You save it as:
404.php
And upload this on your server (root)
Than works the 404 error page's!
http://www.yourdomain.com/thisisatest.php
And than you come out on your own 404 error page!