D-LINK DSL-2790U Modem Router - How to change DNS servers

Mediaket shows you how to change the DNS  servers in D-LINK DSL-2790U modem in 1 minute.
Changing your ISP's DNS servers can help to...

Increase speed browsing by moving to a faster DNS server.
Accessing blocked websites.
Improve security by changing to more secure DNS servers.
Keep your children safe by blocking inappropriate websites by selecting a Family Safe DNS server.

Overview:

D-LINK DSL-2790U - Wireless N300 ADSL2+ Modem Router:

The DSL-2790U reaches wireless speeds that are almost 6 times faster than 802.11g1. Maximize wireless performance by connecting it to computers equipped with Wireless N interfaces and stay connected from virtually anywhere at home and in the office. The DSL-2790U can also be used with 802.11g and 802.11b wireless networks to enable significantly improved reception. You can even share your mobile Internet connection when on the road by connecting a compatible 3G USB adapter.

The DSL-2790U’s security features prevent unauthorized access to the home and office network from wireless devices or from the Internet.

The Wireless N300 ADSL2+ Modem Router is backward compatible with existing 802.11b and 802.11g wireless equipment, ensuring compatibility with a wide range of wireless devices, making your older devices still relevant.

Device Interfaces:
RJ-11 ADSL port.
4 RJ-45 10/100BASE-TX Ethernet ports with auto MDI/MDIX.
Built-in 802.11n wireless LAN.
Factory reset button.
WPS button.
Wireless on/off switch (optional).
Power on/off switch.
USB host 2.0.

Router Features:
NAT & NAPT.
DHCP server/client/relay.
Static Routing, RIP v.1, v.2.
Universal Plug and Play (UPnP) compliant.
SNTP, DNS proxy and IGMP proxy.
Supports IPv6.
Dynamic Domain Name System (DDNS).
Virtual server.
...