I have a network that connects to the internet via a AT&T dsl connection secured by a pix 506e firewall. Problem is that the customer is out of usable static ip addresses. They purchased another dsl connection and it is installed but is not yet on integrated into the network. I purchases a Cisco pix 515e with an unrestricted license thinking I could bring the new dsl connection in on that and have my new ip block usable but I've realized it is not as simple as that. The switches I have are Cisco 2950s. I need help on how to configure this with the hardware that I have.