[otrs] help with inital postgres tables !??

hi I've just CSV'd down OpenTRS, but I'm having some trouble trying to use it with Postgres (I know it's only really been tested with MySQL, but I am being forced to use Postgres from higher up) when I try to run the table creation script, it doesn't seem to like the (0) after the timestamp entries !! will it harm the system if I remove them so the entries simply read create_time timestamp NOT NULL, create_by integer NOT NULL, change_time timestamp NOT NULL, change_by integer NOT NULL, ?? it is also complaining about 'serial8' on the 'article' table :o( any hints on how to force the tables and seeding process through ?? thanks _scott