Connecting ripplecom to wireless

Apologies if this is the wrong forum but it seemed most appropriate.

I got ripple broadband into the house and set it up on a Belkin wireless router. Everything was fine on that. I then decided to try their phone service. They sent me out a new modem to connect between my broadband modem and my belkin router. Nothin worked so I rang them up and they got me to change a number of settings in the phone modem and the internet worked again. After a number of problems with the sales department I decided to cancel my phone service switch. I disconnected the phone modem and plugged the LAN directly into the router again. The modem light is flashing on the router and it is not connecting to internet. I have tried going into the settings for it on my browser but I cannot access them. The guy in ripplecom wasn't helpful at all. He just said I need to change my router settings. Does anyone know why I amn't able to access the router settings on my browser? I can't find the setup cd so I can't use the wizard to set it up.