Airport Extreme: WAN Port Question

[Woodcrest64]

My home network looks something like this...


Internet Cable Modem ----->Router------->Computers


I want to hook up a Airport extreme up to my other router but can I use the WAN port to do that if I turn DHCP hosting off? Example Below... or do I have to use the one of the Ethernet ports?

Modem -> Router (upstairs) -> Airport Extreme (downstairs)-> Computers

 

[andymodem]

Why not just use a standard switch downstairs?

 

[Woodcrest64]

Why not just use a standard switch downstairs?

I want the USB port for my printer and I need wifi down there too. The house needs two wifi routers because of its layout.

 

[andymodem]

Are you going to be running two seperate wireless networks? Not sure if the Airport Extreme will extend a non-Apple wireless network (Extending allows you to have 1 SSID). I have an Extreme hooked up to my FiOS upstairs, and then downstairs I have an Express that is extending the 2.4ghz N network.