Dirty Read - Mailing list pgsql-interfaces

Hi!

How do i invoke dirty read in postgres 7.0.2?
In my Microsoft SQL 7.0 server, i have the following query command:
  select * from mytable (nolock) where name='testing'

How do i invoke the same command in postgres?
I'm planning to migrate my application from SQL 7.0 to Postgres 7.0.2.

Please advise.

Thanks

George