Spinnaker Fuel Tax Program for Excel 97 - Version 2.12 The Spinnaker Fuel Tax Program is an excel add-in specifically written to ease the painstaking process of preparing your quarterly fuel taxes. It will work for individual owner operators and small fleets. When started for the first time the program will create two sub directories where it will store its setup, datafiles and reportfiles. The name of the master directory is c:\SpinnakerFuelTax. The subdirectories are called \data and \reports. The status of the program until registration is demo ware, which transforms into the full package when registration is completed.