COPY doesn't works with es_ES characters

I finally percated that when data contains 'ñ' or 'à' it's impossible to
parse trought:

COPY products FROM '/var/lib/postgres/dadesi.txt' USING DELIMITERS '|' \g

it causes:

SELECT edicion FROM products;
edicion
-----------------
España|Nacional <-------puts on the same cell either there's an '|' in
the middle!!!

but changing 'ñ' for n

SELECT edicion FROM products;
edicion
-----------------
Espana <---------------it separates cells ok

so what's my solution for a text to COPY containing such characters?

Postgresql 7.0.2
Debian GNU/Linux 2.2
I have LANG=es_ES on postmaster.init

best regards,
jaume