Seaching without accents

How can I configure postgreSQL to search without acents?

Is PostgreSQL have this support?

I configured my locale to pt_BR, that support acents, create table with
enconding "latin1", but nothing works. I know that I can use function
"TO_ASCII", and "select like "t_s%".

Like:

Table “test”
Clumns: name , values:
Test
Test
tést
Tést

SELECT * FROM test WHERE name LIKE “tes%”

And it should return values “tést, test”

Thanks,

Augusto