Our Contractor Computer Software program comes on a CD ROM disk, is easy to install, and operates on Win. 95, 98, ME and XP. This software is designed for the Construction Professional who needs to prepare for an exam but does not have the time to spend in class or away from the office. The software contains the same study material that is used in class and allows you to study at your leisure for 30 days. After the initial time has expired you can obtain update codes by calling our office.