About Me: Headquartered in Oskaloosa, Iowa, Doty Computers provides computers sales and service, retail parts sales, digital printing and graphic design, promotional advertising materials, and yard signs. We are authorized Lenovo and Hewlett-Packard resellers. We are also authorized dealers for i-wireless and Jitterbug. We sell prepaid Visa Vision cards and offer bill pay through PreCash for a host of other wireless carriers, insurance companies and utility companies.