[Mark McLeod]

Wireless APs show up in the connect list no matter what your laptop IP is set to.
APs will pass network traffic through for anyone. They don't really care if their IP matches yours or not.

If it's the standard Dlink then the factory default is "dlink".
It should be the one with the strongest signal though.

Are you in a school or at home?
Some IT departments/venues will suppress unidentified APs from broadcasting, but it's only a possibility.

There is a standard option that hides the AP SSID, but that's not the default.
You'd have to go set that option on purpose.

You may have a broken Dlink wireless.

Do you have any old AP routers around the house?
You could test with one of those. No changes to the router are necessary.