Mathew Kirkland has put together a routine that will determine whether the version of AutoCAD installed on a particular machine is 32-bit or 64-bit. This is useful if you manage various machines in a mixed environment, because some third-party routines require different files to be loaded depending on the version.

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Want more information about upgrading to a 64-bit operating system? Check out Curt Moreno's series on CADspeed!