To configure the 2nd router you need to hook it directly to a pc without connecting to your network. You can use your browser to configure it with 192.168.1.1 or 0.1. First disable dhcp on that router, then configure the wifi settings with a new ssid and security. Last thing is change it to a static IP address. If your regular network gateway is 192.168.1.1 then use 192.168.1.2, if it is 192.168.0.1 then use 192.168.0.2. When you do this you will loose access to the router but that's OK. Then take the router to where you want to put it and connect your ethernet cable from the first router. But do not use the new router's internet port, just use one of it's 1 2 3 4 ports. This will make the 2nd router act like a switch with wifi capability instead of a router.