If you are connected to your router via wifi or ethernet, you should be able to connect to your dlink...
Press Start, and type in CMD. Press enter. You should see a command prompt appear.
Now you need to type "ipconfig /all" and under your appropriate connection (wifi adapter if using wifi, ethernet adapter if using hardline) and look for the field called "Default Gateway". This is the IP address of your dlink router, type that into the url field of your browser and connect that way. You should get a dlink login page.