error creating sql function

I was trying to create a sql function today (see below) using
postgresql 7.3.3. I don't see how to get around this error, anyone
have any suggestions?

Thanks much,

Matthew

tocr=# CREATE OR REPLACE FUNCTION public.update_dncl(bpchar, bpchar)
tocr-# RETURNS void AS
tocr-# '
tocr'# begin;
tocr'# update area_codes
tocr'# set last_updated = now()
tocr'# where code = $1;
tocr'# DELETE from do_not_call_list
tocr'# where area_code = $1;
tocr'# copy do_not_call_list (area_code, number) from $2 with delimiter
as \',\';
tocr'# commit;
tocr'# '
tocr-# LANGUAGE 'sql' VOLATILE;
ERROR: parser: parse error at or near "$2" at character 178
tocr=# COMMENT ON FUNCTION public.update_dncl(bpchar, bpchar) IS 'Will
be used to update an area code in the DNCL tables.';
COMMENT

tocr=# SELECT version();

version
---------------------------------------------------------------------------------------------------------
PostgreSQL 7.3.3 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2
20020903 (Red Hat Linux 8.0 3.2-7)
(1 row)