Send Mail from PHP Using SMTP Authentication

Hi, Just as I am exploring some of my alternatives for using the mail() in PHP, I came across a web page that one of the users on the list has provided me: http://email.about.com/od/emailprogrammingtips/qt/PHP_Email_SMTP_Authentication.htm. Does anyone know what the Mail.php is referring to here? <?php require_once "Mail.php"; $from = "Sandra Sender <sender@example.com>"; $to = "Ramona Recipient <recipient@example.com>"; $subject = "Hi!"; $body = "Hi,\n\nHow are you?"; ?> If it is something from PEAR package, why isn't it necessary for it to specify the path to that code? Can it tell by itself? Thanks for your help. Alice _________________________________________________________________ Hotmail is redefining busy with tools for the New Busy. Get more from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2