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First of all, it seems to be more of a tutorial than an actual game. Second, since the 3DS has been released and no more DS games are being released, it isn't likely that this game will be released in the US anyway.
Given these two, it'd probably be best to just play TCG Online, or the TCG games on the GBC. Last time I checked (which was around August 2013), the fan translation patch for Card GB2 was finally done (or at least near completion).