PHP e-mail Headers, etc.

Had a question about sending e-mail with the PHP mail function (or SMTP):

I have a site that I am working on that has a function like this:

function enviar_correo($fromname, $fromaddress, $toname, $toaddress, $bcc ,$subject, $message)
{
      $headers  = "MIME-Version: 1.0\n";
      $headers .= "Content-type: text/html; charset=iso-8859-1\n";
      $headers .= "X-Priority: 3\n";
      $headers .= "X-MSMail-Priority: Normal\n";
      $headers .= "X-Mailer: php\n";
      $headers .= "From: \"".$fromname."\" <".$fromaddress.">\n";
      $headers .= "Bcc:  \"".$bcc."\"";



      return mail($toaddress, $subject, $message, $headers);
//return 1;
}

Sorry for the Spanish

It seems to be working correctly except for the from and bcc headers.  It isn't sending the $fromname in the e-mail, and it isn't sending the bcc e-mail at all.  I've tried quite a few changes and I'm having trouble with that.   Also is there a way to send via smtp from PHP and how is that done.