DCS-930L may experience an inability to connect wirelessly if your wep/key for your router is too long; mine was 26 characters long, but as soon as I changed my routers settings from 128bit to 64 bit, and choose the option of ascii - I choose a simple 8 character pass-phrase, and no longer had wireless connection problems.
To get to your home router to shorten your wep/key, simply find the IP address of your router via your home network, and you should find it in properties (after left clicking), then simply enter that ip address into the address bar of your browser, and it will automatically take you to the router set up screen.
The default logon for D-Link routers is "admin", leave pass-word empty and hit [enter].
I know this will be much helpful to others, who like I went through tech support twice, before recognizing the set-up software simply allows for limited characters in the wep/key.