I have been supporting personal and networked computers since 1977. While in the Bay Area, I was the sole outside support person for VISA's branch office in San Mateo, Mills-Memorial Hospital in Millbrae, and for Bailard, Biehl and Kaiser in San Mateo (a Fortune 1000 company). I also did extensive work for many other firms throughout San Mateo County and the surrounding area, including Levi Strauss in San Francisco. In total, I had a client base of over 400 individuals and businesses.
In 1989 I sold my business and moved to Humboldt County. Here in Humboldt I have worked primarily for myself, but I have also worked as IT support for R&D Computers and SHN Consulting engineers.
Among my Humboldt clients are (and have been) Jerold Phelps Community Hospital, Aalfs Evans & Company, Holly Yashi, U.S. Bank, Six Rivers National Bank (now Tri-Counties Bank), St. Josephs and General Hospitals, Eureka Police Department, Anderson Robinson Starkey Insurance, Shaw Petersen Insurance, several law firms, and a few hundred other small businesses and individuals.
Update Oct 2016: I'm now largely retired, but I'm continuing to take on small jobs, because I enjoy the work. If I am not the one to help you, I will try to point you to someone who can.