42 Consultancy in the field of computer hardware, recovery of computer data, computer programming, computer software consultancy, installation of computer software, maintenance of computer software, updating of computer software, computer system design, computer system analysis, computer virus protection services, creating and maintaining web sites for others, data conversion of computer programs and data (not physical conversion), graphic arts designing, hosting computer sites (web sites), authenticating works of art, providing Internet search engines, rental of web servers, rental of computer software