My Dlink router lights just flash

Not a good sign. Have you tried resetting? You'll find a reset 'hole' on back of router. Press and hold with a pin for 15 seconds or until lights go out and come back on. Upon resetting, you will need to reconfigure. Disconnect sat/cable modem while doing this. Use the passcode and admin URL address on bottom/back of router to get to configuration. Should also power off modem and power back on when done configuring to reset the Internet connection.
Please re-post if you need help with configuring the router.