Connect 1 PC via ethernet to the router. Configure to obtain IP automatically. Verify that you can access the internet. Drop to a CMD and run ipconfig -all, recording these for the Ethernet connection: - IP Address - Subnet mask - Default Gateway - DNS server Log into your router and change its DHCP IP Scope to allow at least 10 IPs it won't assign. So if it currently is set up to assign 192.168.1.1 - 192.168.1.254, then Change it so the scope starts at 192.168.1.10 or so. After doing this, release/renew the PC and verify internet access. On the server, set a static IP on the NIC using an IP outside of the router's scope, for example 192.168.1.5. Use the Subnet mask, default gateway and DNS server that the PC had gotten. Verify access to the internet by pinging google.com (I will never recommend that you actually surf the internet with a server, but that's up to you). Now the obvious next step would be to run DCPROMO, but there is a problem where I can't help you any further. There are other things you are going to have to find out about your router, specifically: - how to add A record to the DNS so your clients can use FQDNs. You might actually need to do this before running DCPROMO. - how to allow wireless clients ability to see physical devices. Most consumer routers have an internal firewall between the different network types.