Cannot access Mybookworld edition connected to ethernet?

I have never figured this issue out, I have a mybookworld connected to my airport extreme through Ethernet and I cannot seem to access the web access. Your supposed to be able to go to a browser type in mybookworld and it redirects you to the admin utility for the device but yet when it's connected to the airport extreme it just Google's mybookworld. Can anyone offer some insight to what the conflicting issue is that's causing it not to redirect properly?