Web Redirection using squidguard

[Smee]

I work for a networking company and have been asked by a client to set up a network which only allows access to 2 websites (e.g http://www.smh.com.au and http://www.hotmail.com.au) and all other traffic redirected to them (so if someone tries to goto www.google.com it gets redirected to www.smh.com.au or a landing page with the above addresses on it). I believe that this can be achieved via Squid and Squidguardian which I have installed on our current box. Can anyone assist in how to actually configure them to do this? I have tried searching the forums and haven't had any luck.

Cheers in advance