T-1 line and drops are setup, now what?

I feel like a dummy, but it’s been to long. I have a T-1 line and the drops, now I need to know what to do next. What hardware to hook-up to the T-1 line that will be used mainly for Internet access. I have W2K server software to install on a PC and a domain name. How do I get IP addresses to use on a 3 – 5 station network. I do have some W2K server experience for setting up the network.