I had to set up a workstation with the exact settings first. Once I had internet access, I then installed the e-smith os and when the system rebooted, I then unplugged the workstation and then set the computer name up as comcast expects you to. Just put the CC#?#?#?-A or whatever they gave you. For the host name, I put my host name, not the one comcast gives. Also make sure that you put in the correct gateway and network mask. Let e-smith use its own dns not comcasts. When I set up dns through comcast, I could not get a connection. If this all works and when you reboot the server at any point, you may lose internet access. Just set up a workstation with the correct info to establish a connection, then switch cables.