I'm new also but I believe the information you gave has what you are looking for.
Etho is your NIC card.
What are you running? as an OS that is. I am not sure about anything but Fedora Core but you should be able to go to Desktop> System settings> Network.
If it is anything like Fedora Core 4 there will be a Devices tab and Eth0 will be indicated there. Double click on it and somewhere in there it will tell if you are static IP or DHCP. Default is DHCP so that it what it should be unless you changed it during or after install.
Lance aka latcarf