webstuck - 1:21 pm on Apr 20, 2011 (gmt 0)

In my .htaccess file, I redirect any 404 web page errors to a server error page. However, I was noticing that if you go to non-existent web page using Internet Explorer with IE7Pro installed, it brings up its own error page instead of my server error page. I imagine there are other programs out there that also handle 404 error pages this same way. How can I set up my server so that people going to a non-existent page on my website see the server error page instead of a program's, such as IE7PRO, error page?