Mail package smtp authentication

Hi, I'm using the Mail package to send out emails, the SMTP server recently got changed to require authentication for everybody, even local machine connections. I can't find any detail in the docs on how to make my code authenticate with the smtp server (defined in php.ini, I'm running on a WindowsXP development box) How do I specify a username/password to submit to the smtp server before the sending of the email? I noticed the needed attributes in Mail/smtp.php but don't quite understand how the Mail system works. I just create a Mail object from the static factory method :-) Any info appreciated. Regards, Mike C. ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs Email Security System. For more information on a proactive email security service working around the clock, around the globe, visit http://www.messagelabs.com ________________________________________________________________________