[Blind-sysadmins] dd-wrt as a repeater

Hello, Has anyone set up dd-wrt as a wireless repeater? I've got a router, a Linksys e3000 that I put dd-wrt on it. I attempted to set it up as a repeater, it's showing as a separate ssid wireless network, and I'm not able to get to it. I'm wanting to know what I missed? Also, what SSID do I give the repeater, my 2.4GHZ my 5GHZ or my guest network? Thanks. Dave.