In a food processor, combine flour, wafers, sugar and pecans; cover and process until pecans are fine texture. Add the butter and then cover and pulse until crumbly.
Press into an ungreased 13-inch by 9 in baking dish. Bake at 350 degrees for 15-18 min or until lightly browned. Cool on a wire rack.
In a small bowl, beat the cream cheese, sugar, milk, and vanilla until blended; spread over crust to edges of pan. In another small bowl, combine sugar and flour; whisk in eggs and lime juice. Gently pour over cream cheese layer.
Bake for 20-25 min. or until filling is set. Cool on a wire rack. Refrigerate for 1 hour or until chilled. Cut into bars. Before serving, sprinkle with confectioner's sugar.