Don't try to configured your router through the wireless connection. Do this first, connect a PC with the cable to the router. Reset the router, then on the computer open up command prompt and do ipconfig /all to verify you have recieve an IP address from the router, if not you might have to check if your card was setup to manually assign IP address or the router hasn't reponse to the DHCP request yet. You can do ipconfig /release follow by ipconfig /renew
Do ipconfig /all and take note of what the address says in the default gateway. That is the IP address into your router.