inherit table and its data

hi All,
I am using PostgreSQL 8.2, and I am interested in creating a table B that inherits table A, but with all it's data!

create table B {a int} inherits A, just adds the structure of table A, not its data.

Is it possible to do this without the classic way - trigger on table A so each insert/update is done also in B, or it's not possible without triggers.

thanks, Dilyan