37 computer installation maintenance and repair; computer network installation and repair; maintenance of computer network hardware
39 warehousing of computers and computer network parts and systems
41 computer training in the use and operation of computers and computer networks
42 computer consultation and assistance; computer network consultation and assistance; computer and computer network diagnostic services, remote and on-site monitoring of computers and computer networks; remote and on-site performance testing of computers and computer networks; maintenance of computer software and computer network software; computer and computer network programming for others; computer and computer network site design; updating of computer and computer network software; computer and computer network software design for others; computer and computer network systems analysis; and integration of computers and computer networks