how to return a result set from a stored procedure

Hi everybody

I am trying to write a stored procedure that returns a result set but it is
not working
this is the function:
///
CREATE OR REPLACE FUNCTION
remisiones.fn_get_total_remitidoxprovision1("numeric")

RETURNS SETOF record AS
$BODY$
begin
select rm.provision as provision,
drm.producto as producto,
sum(drm.cantidad) as cantidad
FROM remisiones.remisiones rm, remisiones.detalles_remision drm
WHERE rm.remision = drm.remision and rm.provision = $1
GROUP BY rm.provision, drm.producto
ORDER BY rm.provision, drm.producto;
end;$BODY$

///
If I call this function from the interactive sql of pgadminIII I get this
result:
select * from fn_gert_total_remitidosxprovision(1)
---------------------------------------------------------------------------
row refcursor
1 <unnamed porta1>

is there a way to display the value of the rows returned, i need it becouse
I need to use it in a Datawindow definition in an Powerbuilder app.

thanks in advance

Hugo