OK, I'm really not sure what to do, but here is what I have:

Under LAN settings: I can change IP address, or disable/enable DHCP and give it a range of addresses to use.

Under WAN settings: I can choose static where I need to input IP, subnet mask, DNS server address, gateway etc...
I don't particularly know what numbers to put in there, but maybe I could figure them out somehow.
Otherwise I could choose dynamic where I can basically choose to get DNS address manually or automatically, again I don't really know what numbers I'd put in there if its not getting the right ones automatically.

Please help me to figure out which settings I can screw with to make this work. Thank you in advance, sorry if I'm just a stupid newbie to this networking thing.