Salvation CreekAs I bumped across the water in a leaky tin dinghy I didn't know that the journey had begun. That the pale yellow house with a corridor of columns and long verandah on the high, rough hill would hold the key to it all At 44 Susan Duncan appeared to have it all. Editor of two of Australia's top selling women's magazines, a happy marriage, a jet setting lifestyle covering stories from New York to Greenland, rubbing shoulders with Hollywood royalty, the