Internet Exlorer 5 and error 404

Hi, This strictly does not elong on this list, and if somebody could point me in the right direction it will be appreciated - I could not find any support lists at the Apache website. I'm running Apache with PHP and spent a lot of time to configure the server to handle most error 404's properly using PHP. Unfortunately Microsoft's Internet Explorer 5 seems to believe it can handle errors better than I can and shows its own standard template page rage than my customised server generated response. Does anybody have a solution (server side) for this? Thanks Nico