SetTime()

         Changes time system time

    Syntax:

         SetTime( cNewTime ) -> lError

         cNewTime : A string with the new time

    Description:

         Changes the system time with a specified time in this format:
         HH:MM:SS.

         The opposite operation, is that to say, taking the hour
         of the system could be made with the standard function time().

    Return:

         Returns .T. if the hour is valid and .F. if it isn't.

    Example:

         SetTime ( "17:05:43" )
         If ! SetTime ( "78:99:90" )
           Warning ( "Incorrect time" )
         EndIf