What do I need to provide the cable company with for grounding, when wiring my own house?
Do a search for "Intersystem Bonding". You should be able to find quite a few devices on the market, hopefully one of them suits your fancy.

Basically, you'll install an intersystem bonding termination device (with at least 3 terminals) near the electrical service entrance. Then you'll bond the IBT back to the grounding electrode system, using a 6 AWG copper conductor. You should be able to find an IBT device that can mount directly to the meter base 
 or service panel enclosure, if that's more convenient for you.


  


Here's an article from the International Association of Electrical Inspectors (IAEI) magazine, that discusses the NEC 250.94 rules.