Radius + Credit card auth

[jomom]

I now have radius authentication working.
I also have creditcard auth working

But what I need to do now is figure out a way to get them both working at the same time.

Heres the scenerio

Members can enter in their username and password and gain access to the network/intarweb. If the user isnt a member then they have to pay $2 a day for access through the payment gateway.

Whats happening now

if I enable radius authentication the creditcard processing goes through, but then goes back to the authentication page (because there was no username supplied)

any suggestions?

I thought about adding a "creditcard" user to the radius, but i'm worried that someone will be able to nab that from the page source of the forum and use it for further access.