Problema com o Outlook

Tenho instalado o windows 8. O microsoft outlook 2003 funciona perfeitamente, porém, em certos emails tem um procedimento estranho - Diario da Republica e outros, por exemplo- em que me aparece a mensagem abaixo: (como alterar este procedimento ?)

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Date: Tue, 20 Nov 2012 02:20:59 -0800 (PST)
From: Favour Dion <000favlu@att.net>
Reply-To: b.favour84@yahoo.co.uk
Subject: Greetings
To: undisclosed recipients: ;
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="1453652615-112197632-1353406859=:17807"
X-Antivirus: AVG for E-mail 2013.0.2793 [2629/5907]
X-AVG-ID: ID7953BD3A-CA55A7E

--1453652615-112197632-1353406859=:17807
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable



Greetings

My name is miss Favour and i hope you doing fine, it is my

pleasure writing to you now and to make my intentions known

to you because am looking for a honest partner for a relationship, =A0 please if you don't mind write me back so i can tell you more about

myself with my picture hope to hear from you lots of love kiss.



-----
N=E3o foram detectados v=EDrus nesta mensagem.
Verificado por AVG - AVG | Antivirus en internetbeveiliging | Virusbeveiliging | AVG Nederland
Vers=E3o: 2013.0.2793 / Base de dados de V=EDrus: 2629/5907 - Data de Lan=
=E7amento: 11/20/12

--1453652615-112197632-1353406859=:17807
Content-Type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: quoted-printable

<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"= top" style=3D"font: inherit;"><br><br><font style=3D"color: rgb(48, 36, 73)= ; font-family: verdana,helvetica,sans-serif; font-weight: bold;" size=3D"2"=
>Greetings<br><br>My name is miss Favour and i hope you doing fine, it
>is m=
y<br><br>pleasure writing to you now and to make my intentions known<br><br=
>to you because am looking for a honest partner for a
>relationship,<br>&nbs=
p;<br>please if you don't mind write me back so i can tell you more about<b=
r><br>myself with my picture hope to hear from you lots of love
r>kiss.</font=
><font style=3D"color: rgb(48, 36, 73); font-family:
>verdana,helvetica,sans=
-serif;" size=3D"2"><span style=3D"font-weight: bold;"><br></span></font></=
td></tr></table>
<a></a><p class=3D""avgcert"" align=3D"left" color=3D"#000000">Não for= am detectados vírus nesta mensagem.<br> Verificado por AVG - <a href=3D'http://www.avg.com'>www.avg.com</a><br>
Versão: 2013.0.2793 / Base de dados de Vírus: 2629/5907 - Data de=
Lançamento: 11/20/12</p>

--1453652615-112197632-1353406859=:17807--

quantos topicos vai abrir a reportar o mesmo problema?

Já tentou instalar o office 2007 ou 2010? é que o 2003 já não tem suporte.