Subject on ar_mailer

Does anybody here knows how to include an e-mail subject using
ar_mailer?
When the model is created, there is no subject field.
Other question: do I have to create a new method (like send_newsletter)
on
the Mailer that inherits from ActioMailer::ARMailer?

Thanks in advance.

Att.

http://www.promine.com.br/ Rodrigo F. de Almeida
Promine Tecnologia da Informao
Gerente de Projetos
Sun Certified Java Programmer