Authorization - redirect (or message) if not authorized???

Hello,

 I'm using ASP.NET 2.0 and VB.Net

I was wondering if anyone new of a way to display a message or redirect the user to a page if they are not authorized to view a page or folder. 

For example, I am using "forms" to have the users login (using the ASPNETDB as a back end)

This works without a problem.

I then allow and deny users or roles within the subfolders by means of the web.config file.

This also works without a problem.

My question lies with what to do when a user, has logged in, but does not have access to that page/folder.

What I notice is that the login page just stays visible (validated).

Is there a way to redirect the user to a different web page when they have logged in, but do not have authorization to view the folder/page that they are trying to access?

Thanks,

JD
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