cast

hi.

I wanna to make a query on this table(postgres system catalog):

Attribute | Type | Modifier
--------------+-----------+----------
relname | name |
reltype | oid |
relowner | integer |
relam | oid |
relpages | integer |
reltuples | integer |
.....
.....
...
.
select relname from pg_class;

How can I get a char or varchar cast for the name data type?....
because relname is a name data type and I want to get a char or varchar
data type.

bye .

my english is no so good!