Just has a quick look at the site you posted the link to fancypiper.
Unfortunately the pages were last updated in 2001 and even then the information was incorrect, for ntl at least.
A better site to recommend would be http://homepage.ntlworld.com/robin.d.h.walker/
it has links to specific cablemodem information on uk cablemodem services. Granted it is not linux specific but then again if you use a cable modem via Ethernet then there is nothing specific to be done regardless of OS.
I can only speak for ntl, but as long as you are able to pickup IP/DNS/Gateway from DHCP you are fine.
luminiscent - the only time you would need special modules is if you were to install via USB.
Found the link for USB Cable Modems in Linux