ICS in general is the same between the two comps. They do the same thing, network performance in general is better with win2k though. Also, you still need two nics. One of them will connect you to your local network, the other one connects to your cable/dsl. You may only need the NIC for you local network if you are using a modem to connect to the internet, or (not sure if this works) you have one of thsoe internal dsl modems.