You aren't asking us to help you connect to network that belongs to someone else are you? If so, we can't help you do that.
To use a router as a "network adapter", you have to change the router to act like a client or a wireless bridge. Typically, you connect your PC to your router via ethernet and then configure your router's mode to allow it to join another network.
It appears that D-Link no longer supports that function so you may be out of luck. Check this link for more:http://forums.dlink.com/index.php?topic=40856.0