is there any way i can add headers in email?

im using cdo object but i can't find a clue about how to add header

for example:

Microsoft Mail Internet Headers Version 2.0

Received: from (IP) ([IP]) by SERVERNAME ([IP]) with Microsoft Exchange Server HTTP-DAV ;

Wed, 10 Sep 2008 16:02:39 +0000

User-Agent: Microsoft-Entourage/11.4.0.080122

Date: Wed, 10 Sep 2008 17:00:29 +0100

Subject: Test for agent

From: SENDER <SENDER@SOMEONE.co.uk>

To: <RECEIVER@SOMEOTHER.com>

Message-ID: <C4EDADAD.53FB%SENDER@SOMEONE.co.uk>

Thread-Topic: Test for agent

Thread-Index: AckTXliJls/D+H9REd2DXwAX8sdIJQ==

X-Priority: 1

Mime-version: 1.0

Content-type: text/plain;

charset="US-ASCII"

Content-transfer-encoding: 7bit