2 (8 oz.) bottles lime juice from concentrate, chilled & divided
Salt

In saucer, dip rim of glasses in 1 tablespoon lime. Dip in salt. In blender, combine lime juice and 1 cup confectioners sugar. Blend well. Add 4 cups crushed ice. Pour into 2 quart pitcher. Add 1 1/2 cups tequila and 3/4 cup triple sec. Put in prepared glasses. Top off with additional crushed ice.