Non-Authenticating Splash Page

"Wilson Hernandez - MSD, S. A." <[email protected]> Tue, 25 Nov 2008 12:47:28 -0400
Newsgroups gmane.network.nocat
Organization MSD, S. A.
Message-ID <[email protected]>
Hello.

I would like to know if there is a way of redirecting users to a splash 
page every hour and have the user to continue browsing the internet 
without authenticating or accepting an user agreement?

Thanks.
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