Pear POP3 and getting the sender's email address

PHP Users, I have implemented the POP3 class in the Pear libraries to retrieve emails with PHP: http://pear.php.net/manual/en/package.networking.net-pop3.getparsedheaders.php It's basically working fine. I can download mail, get headers, all that good stuff. The problem is, when I extract the "From" header, it's not the email of the sender. It's their just their name. Unless I'm overlooking the obvious, there isn't a field that simply states the sender's original sending address. Surely that information is available...? How do I get the sender's email address? Any advice would be much appreciated. -- Dave M G