I have a 2008 domain running at my house, with a wireless router that is serving as the DHCP server. My windows 7 pc can connect to the router and get on the internet, but I can't join the domain. In fact, it can't even see the DC. I had a similar problem with my vista PC's, but I could fix it by manually entering the ip for the DC as the DNS server address (instead of letting the DHCP server in the router point them to the router DNS server). What I have found out, is that anytime I make static entry for the ip or dns server in the IPv4 setting, the PC won't connect to the internet or the domain. Even if I just assign the router ip as the DNS server address, it won't connect to the internet. This is the same DNS address that getts assigned by the DHCP server in the router if I leave it dynamic. Any ideas why the manual congifuration causes the connection to fail?