This article explores how the attempts at building good governance at regional level have been developed by the Pacific Islands Forum, a regional organization in Oceania, as a response to the conflicts in the Pacific Island Countries, and what meaning they have in the context of regional cooperation. The Pacific Islands Forum has tried to follow good governance which aid donors have advocated, and build "governance from above" targeting at the decision-makers and "governance from below" targeting at the civil society. The attempts of the Pacific Islands Forum at building good governance at regional level brought about a new form of regional cooperation in which "trans-societal cooperation" was added to "trans-governmental cooperation," which the Pacific Islands Forum had maintained since its inauguration in 1971. Is it possible for a new form of regional cooperation to become a genuine "participative regime," which Secretary-General of the Pacific Islands Forum Secretariat mentioned as the decision-making process in which all stakeholders got involved? It requires a challenging task of locating "traditional community" in new form of regional cooperation, and at the same time, preventing the outbreak of "ethnic conflict" effectively.