Ok, please try to establish an Internet connection using DHCP:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
iface lo inet loopback
# The primary network interface
iface eth0 inet dhcp
If that works, run
That will show you your IP address, gateway, and netmask which you can then use to configure the static IP in /etc/network/interfaces.