Edit the interfaces config:
$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
Set to:
$ cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.37.117.132
netmask 255.255.255.0
gateway 10.37.117.1
dns-nameservers 10.37.117.1 8.8.8.8
Then restart:
$ /etc/init.d/networking restart