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Title: PC DOS 2000 CD-ROM
Review: According to the installation instructions in the User's Guide you must have a copy of DOS 3.3 or higher (THUS THIS IS AN UPGRADE). But, there is no indication in Amazon's advertisement or on the cover of the User's Guide that this is an upgrade. The first mention that it is an upgrade is on page xii of the User's Guide.So if you don't already have a version of DOS, DON'T buy the CD-ROM.
