field types

Hi,

pg_type's attribute, typname gives the type name
of the fields of the table.
Say my table schema is :-

name varchar(50) age int4;

How do I get the '50' part of the type.
I checked out a few options but always hit a blank
wall, pg_type.typprtlen gives -1 for variable type!!

I'm not a member of the mailing group.
If you have any solutions could you please mail it
to my mail address:- creshma(at)wipinfo(dot)soft(dot)net(dot)

Thanks,
Reshma.