Normally, some of the boxes on the right are not available and you need to enable the Advanced Mode either by typing Command-U or going to the Edit menu and selecting User Mode. This will bring up the User Mode window. Then click on the Advanced Mode button and close the window.

Make sure that Ethernet built-in is selected from the Connect via drop-down menu and Using DHCP Server from the Configure menu. Leave the DHCP Client ID field blank. In the Name server addr field type:

10.160.132.172
10.134.252.100
10.134.252.101

Fill in the Search domains fields as shown in the above picture.

Close the TCP/IP Control Panel window and save changes when asked.

If you have an older beige Mac you may have an extra Ethernet adapter installed in a PCI slot. If you see another option in the Connect via menu, such as Ethernet Slot A1 (or alike) look at the back of your machine and see where the Ethernet cable is plugged in. If it's plugged in to a port that's on the upper/middle right side of the computer, it's the built-in Ethernet port/adapter. If it's plugged in to a slot on the very bottom of the computer, it's the additional PCI slot Ethernet card (usually faster). Remember though that the hardware addresses will be unique for each Ethernet adapter. You have to use the one that you have requested an IP for or it will not work.

IP address is usually assigned within 48 hours from the the form submission. Once your control panel is set up properly, your Mac will get its own IP address automatically whenever it starts up. The IP address, even though assigned dynamically by the DHCP server, is always the same. It is tied up to your hardware address. IP addresses are unique to each floor. Therefore, if you move your machine to another floor you will need to request a new IP and return the previous IP.