pine, pop3 and sender email address

Hi, I am using pine on SuSE Linux 7.0 Pro to access my pop3 mail account. I can read my mails fine from the pop3 server. I would like my pop3 email address to be used in the 'from address' on all mails sent using pine (obviously so people can then reply to my pop3 account). I have managed to change my name in the From field (the receiver sees this correctly), but I can't see how to insert my pop3 address. Currently the receiver gets the following line in my emails: From: Garry Smith I can see how to set the domain part of the mail address, but my pop3 address before the @ is different from my username on the Linux box.. Does anybody have any ideas? Many thanks in advance regards Garry