9 computer engineering equipment, namely, computers, head-mounted virtual reality display units, navigation pads for use in moving within three dimensional virtual reality environments, encrypted keys and computer peripherals for use therewith; interactive software to simulate, through the combination of graphic and virtual reality computer techniques, concepts of decoration and interior design or of landscape design to be viewed in three-dimensional environments and decorating materials data base (such as ceramics, paints, wallpaper, fabrics, wood, cork, wooden floors, floorings natural stones, marbles, wall to wall carpeting, rugs, furniture, lighting material, faucets, handles, figurines, flowers, trees, plants in general and others) pre-recorded on diskettes, CD-ROMs or on any other type of magnetic or digital carriers