Frommer's South Pacific: Including Fiji, Tahiti, Samoa, Tonga and the Cook Islands

Rather than the fifth edition of "Frommer's South Pacific," a better bet is the eleventh edition published in 2008. There are also new editions of "Frommer's Fiji" and "Frommer's Tahiti & French Polynesia," which expand on coverage in the South Pacific book.  All are available on Amazon.com.