Setting up your network adapter is done on the computer through Windows Control Panel. How you get there depends on what flavor of Windows you're running. Make sure your computer is attached to the router by a cable, then go to control panel and open Network Connections for XP and choose the adapter you use. If in Vista or Win7, go to Network and Sharing Center, then change adapter settings. Again, choose the adapter you are using. Go to Properties. Make sure you have the necessary services you need, normally Client for Micorsoft Networks, File and Printer Sharing for Microsoft Netowrks, Internet Protocol Version 4 and/or 6 depending on your service. The go to the properties of Internet Protocol Version 4 and make sure that it is set to have the IP address and DNS set by the router. Save this. If you don't get a connection after the Save, reboot and see if that does it. Once you have a connection, go to the router setup (default is IP address 192.168.0.1) and check your setting there. If you still can't get a connection, you may have to reset the router to factory defaults by pushing the small inset button on the back and holding it down until it resets (usually about ten seconds).