SBS 2003 IP & DNS settings

Going to an office tomorrow that looses connection to it’s servers mapped drives. Since they just relocated I want to double check their ip settings.

They have an SBS 2003 with one NIC, the server and clients have a static IP addresses. They have a wireless router, with dhcp turned on with a scope higher than the static ip addresses for a few wireless laptops.

What should the Default gateway be on the clients? The server IP address or router?

What should the Pri. and Sec. DNS be set to on the clients. The Server, the router or the ISp’s DNS?

What should these settings be on the server?

Thanks