DISKCHANGE()
 Changes the current disk drive
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 Syntax

     DISKCHANGE(<cDrive>) --> lChanged

 Argument

     <cDrive>  Designates which disk drive that you want to use.

 Returns

     DISKCHANGE() returns .T., when the designated disk drive is successfully
     changed.

 Description

     DISKCHANGE() allows you to change from the current disk drive to
     another.  To do this, call DISKCHANGE() with the disk drive identifier
     (A,B,C, etc.).  The drive identifier can be specified with a colon (:).

 Example

     Change to drive C:

     ? DISKCHANGE("C")         // Returns .T. when successful