How to handle http 404 - Not Found errors

[swdev]

We are using an Hyperlink attribute with HREF for a field value.

They are audio recording files and not Always are correctly uploaded to the server.

We need to show to the user a custom message or redirect it to a custom page when such an error occours (http 404 - Not found).

How can this be accoplished?

How can this be solved using asp.net maker?

Many thanks,
John

[Webmaster]

This is a server configuration issue. Google for "configure ASP.NET 404 errors" and you should be able to find examples.