How do I set up a Color Laser Printer 1320c?

I was given a Dell Color Laser Printer 1320c for use in my office. I am primarily a Mac OS X 10.5 user, but I also use Windows Vista virtually. I want to put this laser printer on the network switch in my office and share it out so me and my colleagues can print to it. I am totally stumped as to how to assign a static ethernet address to this printer.

According to the manual that came with the printer, there's a web GUI built into it, but I can't get access to it. I tried hooking up my MacBook Pro to it via an ethernet cable to its port, but when I call up Safari, the web page won't come up. I tried the same thing with a colleague's Dell laptop with Windows XP on it and I got the same results. The documentation that came with the printer says nothing about how to call up this web GUI. I found more info on it by googling and searching this forum, but nothing that explains how to actually access it. I also tried using the disc that came with the printer on Windows Vista, which I run via Parallels on my Mac. It let me print a test page, but the page never actually printed nor could I bring up the web GUI via IE 7 on Vista.

So how in the world do I set up this printer on an ethernet network with its own static IP address?