I'm not sure if this question belongs in this group, because it is actualy an IIS question (I think). I hope someone can answer it.
We have a web server (Internet Information Server). If an internet user requests a page that is not on our server, he will get an HTTP error 404. I've seen some other website that return a custom html-file that tells you that this page doesn't exist. That is what I want too, but how do I do it?