In a large mixing bowl, beat the sugar, meringue powder and 0.75 cup water on low until blended. Beat on high for 8-10 minutes or until stiff peaks form, adding additional water 1 Tablespoon at a time, if needed. Place a damp paper towel over bowl and cover tightly until ready to use. *Meringue powder is available where cake decorating supplies are sold, or you may contact Wilton Enterprises, 2240 W. 75th St., Woodridge, IL 60517; 1-708-963-7100. To assemble frame of the house: test your cookie pieces to make sure they fit together snugly. If necessary, file carefully with a serrated knife or an emery board to make fit. Fill decorating bag two-thirds full with icing. Beginning with the front of the house, squeeze a 1 cm wide strip of icing onto the bottom edge of the front piece. Position on the cookie base, 8 cm from the front edge of the base. Prop it upright with spice jars for 2-3 minutes or until icing hardens; remove jars.