arrays

Hi,
I have a table: orders (id int, val INT4[][]);. The question is how to
select in separate rows values from particular id?

example:
insert into orders values(1,'{{1,1},{1,4},{2,3}}');
select val from orders where id=1; gives me:
val
-------------------
{{1,2},{1,4},{2,3}}

How can I make from it to columned table with first and second int
separated?

mazek