I am on a MacBook Pro and I need to set up and additional Modem and Router on our RoadRunner Turbo cable. The original one is in a detached garage, can't be moved and the signal in the house is poor. I want to add a Motorola SB5101 Modem and a Belkin N1 Wireless Router FSD8231. I get 4 solid lights on the router. The fifth Internet light keeps flashing. Both Routers are password protected.