New Haven, CT
reply to shrewsbury
Re: Adding a 2nd router shrewsbury, the easiest way to connect a second router is to connect the second router to the first via the networking ports and then disable the DHCP server in the second router. Note DO NOT connect the main router to the second router by the second router's WAN/Internet port unless your second router's firmware supports configuring the WAN port for LAN port use.
I have a second router configured for Wireless N mode only and the UVerse router configured for Wireless B/G mode.
Connecting the second router wirelessly to the main router generally requires the second router to support Wireless Bridging or Client Bridging. If your second router supports that feature consult the second router's manual for the setup procedures. Note you may take a speed hit wirelessly when using Wireless/Client Bridging.