Not used Netgear, but I'm not sure why/where you are putting in domain names, account names, etc. Normally, the default settings should work. Connect router WAN/Internet/Broadband (whatever it is labelled) port into cable modem. Connect laptop to one of the LAN ports (initially - get it working 'wired', then worry about wireless). You shouldn't need to change the MAC address of the router, but if you do, it must NOT be the same as the cable modem. The router should be set to obtain IP address and DNS address automatically (from the NTL side), and to act as a DHCP server (for the LAN side). Your laptop should be set to obtain IP address and DNS address automatically (from the router). Then, as you are prbably already doing, power on modem. Wait. Power on router. Wait. Power on PC. wait.