hi
this might help you if i understand correctly what you are trying to do. Go to command promp, type in ipconfig /all ... check your ip's and use those numbers as your incoming domain/ if you are sending the signal out of the outgoing card to a hub/router you will need to configure the router to run on your own private network... 192.168.10.XXX... a hub will not need to be programmed as it will just pass the ip's thru to the right machine that has the card hard coded.
card 1 - (incoming)
ip - 605.559.55.620 << example your isp/ip
sub 255.255.255.0
DF G- 605.559.55.625
dns 605.559.55.XXX
card 2 (out-going to other machines)
ip - 192.168.10.1
sub 255.255.255.0
DF G- 605.559.55.620
DNS 605.559.55.620
card on next machine
IP 192.168.10.2
sub 255.255.255.0
DF G - 192.168.10.1
DNS 192.168.10.1
next machine etc
IP 192.168.10.3
sub 255.255.255.0
DF G 192.168.10.1
am i on the right path for what you need?
cheers