Try
username: admin
password: admin
I only know you can put a WEP/WPA key on setup, but you can see the logs of your internet connectioon, to see if people are using your internet. I think its in tools>log (nt 2 sure)
edit
its under status>log
and if the username and password do not work, you will have to reconfigure ur router unless u find out the user and pass.
5 days ago
Ex-MyPS3 Admin | MyPSP Admin