You will need a Category 5 (Cat-5) Ethernet cable. You will need a long enough cable to reach from your room's Ethernet port to your computer, usually from 10'.
Configure Internet Connection
Connect the Ethernet cable from the port connection on your computer to the ORANGE colored RJ-45 wall jack.
Windows Vista and 7 Setup:
From the Start menu, click Control Panel.
Click on the Network and Internet Icon.
Under Network and Sharing Center, click on View Network Status and Tasks.
On the left side of the window, under Tasks, click on Manage network connections.
Right-Click on Local Area Network icon and select Properties from the resulting menu.
Select Internet Protocol Version 4 (TCP/IPv4) then click Properties.
Assure that both settings have Obtain settings automatically selected, the click OK and OK.
Restart your computer.