[Jorge18]

Here's what you do:

Leave the router that is connected to the Internet as it is.

• On the 2nd router, set the IP to be one above your main router and
• disable the DHCP server
  
• then plug the Cat5e for the Internet into a switch port on this router instead of the Internet/WAN port
  
• set the SSIDs and WPA keys to be the same on both routers
  

- voila, you have a wireless "access point" with switch instead of a router.

So, if your main router is 192.168.1.1, make the 2nd one 192.168.1.2. Make sure the DHCP on the main router starts handing out IPs at 192.168.1.20 or something like that, so it doesn't interfere with 192.168.1.2.

My main router is 192.168.0.1 so I should make the second one 192.168.0.2, correct?