finding ip addresses

hi there. i'm trying to set up a wireless network, and its asking me for my ip address, my subnet mask, my gateway ip address, and my dns server. the first two are listed in network under system preferences, but i can't seem to find the gateway address or dns info. please help! the router i'm trying to set up is by netgear, if that helps. thanks.

You shouldn't need to set all that up. You should be OK just to tell it to autoconfigure with DHCP and it will pick up the routing information by itself.