triggers and execute...

OK, I'm hitting a wall here.  I've written this trigger for partitioning:

create or replace function page_access_insert_trigger ()
returns trigger as $$
DECLARE
    part text;
    q text;
BEGIN
    part = to_char(new."timestamp",'YYYYMMDD');
    q = 'insert into page_access_'||part||' values (new.*)';
    execute q;
    return null;
END;
$$ language plpgsql;
drop trigger page_access_insert_trigger on page_access cascade;
create trigger page_access_insert_trigger before insert or update on page_access
    for each row execute procedure page_access_insert_trigger();


When I create it and try to use it I get this error:
ERROR:  NEW used in query that is not in a rule
CONTEXT:  SQL statement "insert into page_access_20090427 values (new.*)"
PL/pgSQL function "page_access_insert_trigger" line 7 at EXECUTE statement

If I rewrite it to just write to that table:

create or replace function page_access_insert_trigger ()
returns trigger as $$
DECLARE
    part text;
    q text;
BEGIN
--    part = to_char(new."timestamp",'YYYYMMDD');
--    q = 'insert into page_access_'||part||' values (new.*)';
--    execute q;
    insert into page_access_20090427 values (new.*);
    return null;
END;
$$ language plpgsql;

It works.  So, how am I supposed to run it with dynamic table names?