PhilBon

I was wondering if anyone knew or could point me in the right direction of how to stop a user from accessing the internet but still be able to acess the local file servers with Visual Basic. Right now we have a program that we can turn off the internet remotely and a message box will pop up saying the user doesn't have access to that site but the problem is the program turns the internet on and off based on the computer. I'm looking into a way that the program would be user dependent so that way if we have an intern their internet will always be off and we don't have to worry about what computer they are on, to turn the internet off with. We are in a domain enviroment so if there is another way this could work, I'd be happy to hear it.