I just bought an Airport Extreme Base Station with Power Over Ethernet UL2034 off eBay and I tried to configure it with AirPort Utility. My internet works fine but when I try to set up wireless. It says this:

Please make sure your Apple wireless device is plugged in and in range of your computer or connected via Ethernet and try again. (-6765)

When my Airport is plugged into the Ethernet and its sitting right on top of my eMac. So... Whats the matter? anyone?