After evaluating the firm's computer system, VISTECH developed a plan for improving the stability, security, lifespan of the computer infrastructure. Technicians collaborated with the lawyers in order to prioritize a list of tasks tailored to the firm's needs. First, VISTECH increased the operational reliability of the firm's desktops and laptops by upgrading each operating system from Windows Millennium Edition to Windows XP Professional. Internet access was improved by replacing a shared dial up service with a DSL connection. To further protect and secure the firm's records, VISTECH installed Symantec Antivirus and added a network attached storage device to the computer system. Because the firm operates from multiple offices, VISTECH installed a VPN connection between locations to facilitate secure file sharing. The gradual implementation of these upgrades was not only able to produce an immediate improvement in the quality of the system, but was also able to prevent an intrusive interruption to the firm's workflow.