It's SER uh kyoose. Some folks might pronounce it differently when they're telling poeple how they pronounce it than they do when they're actually pronouncing it. This was made evident a few years back when Skaneateles, NY had its fifteen minutes and the mayor carefully told the nation it was pronounced Skay nee atlas and then, a few minutes later, pronounced it Skinny atlas the way it's supposed to be pronounced.