[kubuntu] Connecting two routers to each other?

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http://ubuntuforums.org – Recently I got a second wireless router, along with a second DSL line. I'm planning on running any bandwidth intensive applications on a computer using the second line, and the other devices will use the first. The problem is, I want to be able to ssh into the computer, but it's not using the same router. Is there any way I can connect the two routers together, so that a device connected to router A can communicate with a device connected to router B? (Hardware)