Pre-heat oven to 375F. In a mixing bowl, combine Oreo crumbs and butter, mix well. Transfer the mixture into pie plate and evenly pat down to form the crust. In another mixing bowl, combine condensed milk, egg yolks, lime juice and zest. Pour onto pie crust and bake for 15 minutes. Allow to cool in the refrigerator before serving. Then top with whipped cream and a lime wedge.