How to connect my private network using PPPOE.

I have a 2003 server with 2 NIC’s i am using PPPOE to connect to my ISP
Private NIC using 192.168.0.1
External NIC no ip address
I want my client pc inside my private lan to connect to the internet how should i setup my NIC cards and still use PPPOE.
I do not have a static address.