I can't access to my Belkin routers IP congifuration page?

ok i had DSL xbox live work perfectly k?ight so we switch to cable and now i keep getting kick offline bc of connection problems so i am trying to find out my Wireless belkin router- ip address so i can port forrward. i run cmd - pconfig/all DCHP- thang and didn't work when i typed it to the address bar so u tell me