I don't know much about computers or wifi connections, so bear with me. I was on the Skyhook website trying to register my wifi access point so I wouldn't get the "Unable to find location" error message on my iPod anymore. It needed me to put in a MAC address and told me to download inSSIDer to find my MAC address. So I downloaded the software and all was good until I hit "Start Scanning" and got the error message "Unable to use selected interface. Please make sure you have selected an 802.11 interface." What does this mean? How can I fix it? Thanks in advance.