Function:   RmDir()

               Use RmDir() to remove directories. The directory
               must be empty and Not be the DOS current directory.

   Syntax:     RmDir(<cDir>) --> nError

   Arguments:  <cDir> is the name of the directory to remove.

   Returns:    A numerical value, 0 meaning No error, others
               values indicate an error, the number is the DOS
               error code (eg. 5=Acces denied, 17=Attempt to remove
               current directory).

   Usage:      RmDir('DATA\OLD')