cable internet connection

I should know the answer to this, but.. If we get a cable internet connection with a network modem (RJ45 connection), with a three computer network using a 6 port hub, can we put a 2nd NIC in one machine (Win2000), set up ICS on that machine and connect the 2nd NIC direct to the cable modem – ie, without a router – giving all machines an internet connection? If so, a brief outline would be wonderful.