I have installed a windows 2003 Server with two NIC Cards. One NIC is connected to a DSL Router with Static IP address (WAN), the other NIC is running DHCP and has the firewall turned off. The server is routing IP addresses and is configured for NAT. Everything seems to works just fine, except I seem to have a Netbios issue or something. When I share folders on the server, I am unable to browse through the shares from the client computers using start>RUN>\\theservername\sharedfolder. At first I thought it was NTFS Permission problem, but I am able to browse through Active directory on the client computer using My Network Places, and have access to the shared folders. Now it gets a little more interesting, if I am at the client computer and type in the run command \\10.0.0.254\sharedfolder, I am now able browse through the shared folders. Therefore, I must have something configured wrong with the NAT routing, or I need to use WINS to resolve Netbios names. Anythoughts?