2nd NIC

Hello all…
I have access to the internet via a cable modem. My ISP uses DHCP for there customers. I’m running an NT server connceted to 2 clients via a small 5 port hub. My question is can I install a 2nd NIC card on the server, use one of the cards for my ISP and the other card have configured for my clients??
Any ideas would be greatly appreciated.
Thank you,
Tim