RyanL said:fprot tarball !!!!!11
But seriously, folks. With a cable modem, you've usually got an ethernet connection with dhcp. It's usually just a matter of installing a dhcp client and running it. I've had good luck with "dhcpcd", but it's been a while. Ultimately, you'll want to configure ifconfig to automatically invoke the dhcp client at bootup, then you're golden.
Of course, this thread is a few days old, and Tsyr is a resourceful guy, so he's probably figured it out by now.
-Ryan