I want to plug my old router into the new one, and be able to run multiple computers through the old router, which is not located in a different room. I tried simply plugging it in and plugging my computer into it, but or course this didn't work. I plugged my computer in, and the notification showing an unplugged network wire went away. I tried accessing the internet with no luck.
I then searched google for this situation, and found a helpful website, this one. It almost explains my exact situation, with the exception of the router models. I followed the directions, setting up "Router A," my new router, to only issue IPs between 192.168.0.2 and 192.168.0.60. I went onto the next step, disabling DHCP for "Router B," my old router, which also worked fine. I ran into problems when I tried to configure its WAN to any STATIC IP. The problem is, the WAN Setup section under my router's config tool (192.168.0.1 in browser) only the options: Respond to Ping on Internet Port, Default DMZ Server, MTU Size (in bytes) and Default DMZ Server.
Is there another way to configure my router, other than accessing through 192.168.0.1 that I don't know about? Does my old router simply not support configuring it's WAN this way? Some answers would be greatly appreciated, in the mean time I'll be searching google for an answer.
For those who may be a bit confused about what I'm trying to accomplish, here's a diagram (it was fun to make

