u can hook up a telephone cord to the ethernet adaptor but most games require you to have a broadband conection. if you look at the box of the game and where it says online in a grey box on the front cover it says broadband only. this evidentally mean that u cant use a dial-up connection.
p.s. if u wanna get owned by someone in socom3 send some friend invites the names LavaFlow. ill be waiting