Open IE and type http://192.168.1.1 in the address bar.Type "admin" in the password and you will login to the router set up page.Change the following settings under wireless section -- change the ssid.., try diff channels - 1,6,9 and 11 and ssid broadcast -- enabled.
Everytime I tried using admin in the password box, it just kept asking again.
When you first set-up the router, it offers you the chance to input a password. If you do, it overwrites the "admin" password and gives the result you found. Neither the set-up program or the documentation are especially clear on this point, I figured it out by chance.