About Us/General Introduction We are a small business located in Marin County with offices in Sonoma. Our main service areas consist of the town of Sonoma, Petaluma, and Marin County. Other areas are also serviced with a small charge for travel.  Please contact us through our phone numbers listed below. Cell:                        415-290-0973 Office:                    707-939-6468 Fax:                        415-234-9885 Address:                 PO Box 743                                 Belvedere, CA  94920       email: tmiller@comprehensivecomputerservices.com about us | products and rates | services | what's new | email