I have a Motorola Surfboard SB4200 cable modem that connects directly to my ethernet card. My IP stays the same so long as the modem remains powered. If the power gets disconnected it will get a new IP. How do I disable DHCP?
if you can guarantee that your modem will not disconnect, then you can specify the IP in the connection settings... but like Zedric said... if you personally set it, it may not work as sometimes ISPs change the IPs if they're having their own problems :/