Network Configuration

I already upadgred my Linksys b/g router to Berklin N router in my office 2 month ago. But because my office is at one corner of the house, some area have weak signal. So I pickup this cheap Tenda to put in the upstair to cover dead spot (for several 3G cell phone). It works great. My house is wired with Eithernet. So I connect Tenda to Berklin with a switch in between. The setup took some time. But actually use the default works OK. I first turn off Tenda's DHCP and use Berklin's DHCP, but can leave both DHCP on.