PHP SMTP Mailers

Hi,

I'm executing a third-parity standard PHP application on a Windows IIS 7 
shared hosting server.

I need to convert, or use, a SMTP mailer service.  I found two SMTP PHP 
scripts - I think may work.

The sourceforge.net PHPMailer project and the pear.php.net (Mail, Net_SMTP) 
project.

Can any body please help me choose one and probably give a code snip of 
useage?

Currently, I'm leaning forward the PHPMailer, with little to base the 
decision on.

Thanks in advanced,
King Coffee