1. You need a cross over cable between PS2 and PC. This is not the regular patch cable. (swap wire 1-3 2-6)
2. Open properties for the PPPoE adaptor and check "Enable Internet Connection Sharing for this connection" and select the interface the PS2 is connected to to share it to.
3. PS2 will use DHCP and get a IP Address 192.168.0.x/255.255.255.0 Default Gateway: 192.168.0.1
Bridge won't work because you need PPPoE on the cable modem it's not just a regular TCP/IP connection. In any case, nothing will work without a crossover cable. Otherwise, you will need a hub between the PS2 and PC.
PS2: NTSC 39001 V7 + Messiah 2