Various vendors make add-in programs for Microsoft Project. One such vendor is called Critical Tools Inc. (www.criticaltools.com/). One of their add-ins for Microsoft Project is called PERT Chart EXPERT. One of the features of PERT Chart EXPERT is that it enables the user to create timescaled PERT charts. Eor this exercise, go to the Web site for PERT Chart EXPERT (www.criticaltools.com/pertmain.htm) and investigate what a timescaled PERT chart would look like. As you investigate the Web site, you'll find a page that compares timescaled to non-timescaled charts. Explain what a timescaled PERT chart is and how it compares to regular PERT charts in Microsoft Project. Why would a project manager want to use timescaled charts? Continue to explore the Web site and report on the other features of PERT Chart EXPERT, as well as its price, com¬ patibility, and system requirements. Your instructor may also want you to download the demo and report about it as well.