Hooking up a N68U and a N66U

[Llmavll]

Hello,

I have had a Asus N66u as a main router in my office, I needed to extend the wireless so I bought a Asus RT N 10+. Worked great.

However, I have recently bought a new N68U and now want to use my N66U in the basement to replace my RT N10+.

I want to use the N66U in the basement with wireless and extra LAN ports for hard wired connections.

So, how can I set this up? I used 2 different SSID last time, one called "2.4 Upstairs" and one called "2.4 downstairs" (and also 5.0 Upstairs).

Should I setup the N66U downstairs as in AP mode? What other extra stuff needs to be changed.

I have cat 6 cable running from the N68U to the N66U.

Thanks very much in advance.
Kris