just buy a network adapter (ps2), a router (depands on your internet provider), and star wars battlefront (PS2) duh...
network adapter= 40
router = 60
total= 160 euro
im dutch and this is what i paid.
then start the ps2, enter the online cd, enter some codes and user stuff, reset the ps2, enter the star wars game, and hit multiplayer/internet. enter your spygame code (only with this game), if you dont got one then you can make one, and bamm your landed right between some stormtroopers ready for action.