In the "Net device" drop-down menu, you'll notice many different names that Linux uses for various networking devices.
The names for Ethernet devices begin with "eth". The first Ethernet card configured on a machine is named eth0, the next one would be eth1, etc.
The correct module to use for a network card can be tough to guess, the module names sometimes have no similarity to the card itself.
It's best to check the hardware compatibility list for drivers that work with your network card (external link).
DHCP can also be enabled in this panel if your network requires it.