command not found from CD-ROM

GRASS GRASS user
1

Hi:
I have read at the GRASS 4.1.2 manuals that there is a command called
r.water.outlet, I have installed GRASS 4.1.2 from a CD-ROM and this command
does not exit. Where can I get it?.
  
                                  Thanks in advance
      Gonzalo Carrero.
fa2capeg@trajano.uco.es
Servicio Centralizado de Informacion de Territorio
Cordoba. Esp