[USR-TC] Redirects based on Radius settings

Hello, We currently run TC Hiper cards and use 3Com Security/Accounting Server 6.0.8 for radius. I was wondering if the gurus of this list of have tried the following before. I am trying to make it so if a user is flagged somehow in the database he will only be able to go to one website. I am wanting to make it so customers who have been shut off for non payment, can get redirected to a website to make the payment after hours and any time our support office is close. Also, would like to make it so if they are not in our radius DB at all, they get redirected to a place to sign up for our service live. If anyone has any information on this, please let me know. Thanks, Mark Mitchell Inwave Internet Inc.