D-Link DSM-750 - MediaLounge High-Definition Draft N Media Player User Manual page 94

Section  - Configuration
Use your remote control number keypad, or select the numbers from
the on screen number pad, to enter your wireless network's Internet
gateway.
Once you have entered your Internet gateway, use your remote control
to navigate to the Next option and press OK.
Click Next
Use your remote control number keypad, or select the numbers from the
on screen number pad, to enter your wireless network's DNS server.
Once you have entered your DNS server, use your remote control to
navigate to the Next option and press Enter.
Note: If you are unable to connect to your network, please check your
network connections or contact your network administrator.
Click Next
D-Link DSM-750 User Manual