I assume the only reason you're using repeater mode is because the signal from the hotspot is weak. Otherwise there's little point - I prefer hotspot mode for such things. Anyway, you set the DIR-505 to Repeater mode and plug it in. Wait a couple of minutes after you see the DIR-505's network become available and connect to it (by default the SSID and password are what's printed on the card supplied and on the DIR-505 itself). Once you are associated to that network, open Safari and go to dlinkrouter.local You should then see the DIR-505's network wizard. Follow it through, have it search for the hotspot and let it connect. Then the DIR-505 will restart. After it does (and again wait a few minutes), you should be able to connect to the stronger signal from the DIR-505.