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As for the rest of the world, however, there is no confirmation. The GC has slots for a modem and broadband adaptor, making it "future proof", but Nintendo have only said that they will introduce online capabilites "if and when" they say so. They will probably wait until they are sure that the games can be reliable fun, and make money.
When PSO comes out, apparently it comes in a bundle with a modified keyboard controller, and a modem.