You have ADSL......... i hate you so i am not going to tell, Damn Low PING B@$tards and their LAG free gaming!
sorry anyway only j/k :clown:
if you get an ether net USB adapter then you should be able to do it to find out more .. look into TOny Hawks 3 (it was featured in last mounths Official Playstation 2 mag)
just connect the USB ethernet adapter to your PS2 and then just slot the cable to your ADSL connection.