problem with AuthCookieName and Apache

Hi Friends,

I has a problem with my configuration of AuthCookieName and Apache, I has a
apache 1.3 on debian woody , i has this :

in http.conf

# permite tomar de una cookie el login y pass
LoadModule cookie_auth_module /usr/lib/apache/1.3/mod_auth_cookie.so

the file of .so exists as ls shows me

-rw-r--r-- 1 root root 5684 Jun 25 2004
/usr/lib/apache/1.3/mod_auth_cookie.so

the apache -l says

morpheo:# apache -l
Compiled-in modules:
http_core.c
mod_so.c
mod_macro.c
suexec: enabled; valid wrapper /usr/lib/apache/suexec

the protected folder "protegida" has the
morpheo:# cat .htaccess
AuthType Basic
AuthName El realm
AuthUserFile /home/kiiop/claves/tienda
require valid-user
AuthCookieName VisitorID

in my php file
.....
setcookie("VisitorID","$numtarjeta:$pin",time()+72 00);
header("Location: ./validado.php?numtarjeta=" . $numtarjeta . "&pin=" .
$pin);
.....

and validado.php
<?
header("Location: ../protegida/");
?>

I has do the steps describe in
http://www.dsm.fordham.edu/~moniot/C...ie-htaccess-ho
wto.html

( this howto seems to be for redhat and I has debian)

but when i set the cookie (which i has seen on a browser alert) then the
apache dont seem to take the VisitorID cookie to pass it to the realm
..htaccess.
It seems as this system of mod_auth_cookie does not been working on my
system.

I has see the error.log of apache but it dont say nothing.

Please, Could you help me? Thanks in advance,

Saludos,
Francisco Castillo.