If your modem itself is shot then you have to get a new one from SBC. If your router is shot you can buy a new one of any brand. If your router still works fine but you need to reconfigure it you can push and hold the tiny reset button (usually requires a paperclip or pen to get to) for about 15 seconds. When you let go it should return the router to factory defaults. From there you can set it up again as needed. Good luck.