Showngo - is your Apple router broadcasting it's SSID? If not, the 770 won't list it (which is correct, as your network is hidden) and you will have to manually create the connection in Control Panel -> Connectivity.

There's little point keeping a SSID hidden as it has no real security benefit (it's security by the weakest form of obscurity which any trainee script kiddie can overcome). If your SSID is currently hidden my advice is broadcast your SSID and the 770 should find it when it performs a scan.

The only decent defence against intrusion of a wireless network is WPA/WPA2. I'd be very concerned about anyone using WEP on a business network - you could probably crack the WEP key with your 770 in no time!