wrong email address in header

I have a computer running OL 2003, no Exchange server, 5 pop mail accounts.  Problem is that the default mail account (jdoe@defaultaccount.com) is set, and when I send an email to myself, it shows my name with that email address.  But, if I send the message outside, the recipient gets my message, it says my name, and following my name it says jdoe@oldemailaccount.com.  If the recipient replys to the message, it comes to the correct account.  I have triple checked the default account settings, and there is NO reference to the old email address in there.  The old email account is still in the list, but is not chosen as the default, and I have made sure that the message sent to the outside has the right account chosen for sending.  Just can't figure out where this old address is coming up.  If I open the message and go to View and Options, it looks like I am sending from the wrong account, with the reply address set to the right account.  Here is what i get...

Microsoft Mail Internet Headers Version 2.0
Received: from mx4.ij.net ([207.100.203.150]) by intouchbc.com with Microsoft SMTPSVC(6.0.3790.211);
       Tue, 10 May 2005 11:18:52 -0400
Received: (qmail 38415 invoked by uid 85); 10 May 2005 15:16:15 -0000
Received: from 65.110.50.90 by mx4.ij.net (envelope-from <bstayton@csalegal.com>, uid 82) with qmail-scanner-1.23
 (clamscan: 0.73.  
 Clear:RC:0(65.110.50.90):SA:0(0.5/2.9):.
 Processed in 9.623597 secs); 10 May 2005 15:16:15 -0000
X-Spam-Status: No, hits=0.5 required=2.9
Received: from unknown.sagonet.net (HELO ns1.creativetech.us) (65.110.50.90)
  by mx4.ij.net with SMTP; 10 May 2005 15:16:04 -0000
Received: (qmail 873 invoked from network); 10 May 2005 15:12:29 -0000
Received: from unknown (HELO Brian) (71.100.103.54)
  by unknown.sagonet.net with SMTP; 10 May 2005 15:12:29 -0000
Reply-To: <BStayton@MarloweMcNabb.com> (THIS IS THE RIGHT EMAIL ADDRESS)
From: "Brian Stayton" <bstayton@csalegal.com> (THIS IS THE WRONG EMAIL ADDRESS)
To: <debbie@intouchbc.com>
Subject: test 2
Date: Tue, 10 May 2005 11:15:51 -0400
Organization: Marlowe & McNabb
MIME-Version: 1.0
Content-Type: multipart/related;
      boundary="----=_NextPart_000_002E_01C55551.A01A0960"
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
Thread-Index: AcVVcyX2BBGnWx9oRUqqnfWPgrvnpA==
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527
X-Qmail-Scanner-Message-ID: <111573816769337632@mx4.ij.net>
Return-Path: bstayton@csalegal.com  (THIS IS THE WRONG EMAIL ADDRESS)
Message-ID: <SERVER-21VRIjn04x290000004d@intouchbc.com>
X-OriginalArrivalTime: 10 May 2005 15:18:52.0996 (UTC) FILETIME=[933FD040:01C55573]

------=_NextPart_000_002E_01C55551.A01A0960
Content-Type: multipart/alternative;
      boundary="----=_NextPart_001_002F_01C55551.A01A0960"

------=_NextPart_001_002F_01C55551.A01A0960
Content-Type: text/plain;
      charset="us-ascii"
Content-Transfer-Encoding: 7bit

------=_NextPart_001_002F_01C55551.A01A0960
Content-Type: text/html;
      charset="us-ascii"
Content-Transfer-Encoding: quoted-printable


------=_NextPart_001_002F_01C55551.A01A0960--
------=_NextPart_000_002E_01C55551.A01A0960
Content-Type: image/jpeg;
      name="image001.jpg"
Content-Transfer-Encoding: base64
Content-ID: <image001.jpg@01C55551.9EE24CB0>


------=_NextPart_000_002E_01C55551.A01A0960--


Any help is much appreciated.

Debbie