I have optimum online (Cablevision) and have a SB5100 cable modem (At another PC) and a WCG200 linksys router (Using USB) on this PC. I want to reset the IP address (Get a new one) but can't seem to do it. I've tried flushing the DNS and such, but I never get a new IP. With the cable modem (When I didn't have a router), I always had the same IP address. When I got the router, It got a new IP automatically for It's self. How do I change it now?