When I reply to email it currupts the original (see example)

[museudf]

Hi All

I have a strange problem, when ever I reply to an email (plan text and also HTML) the original email appears as random symbols. see below:

Example

-----Original Message-----
From: xxxxxxxxx
Sent: 18 October 2006 10:31
To: xxxxx
Subject: xxxxxx

GIF89aÂ
‡÷ú!#-23#1"2*,1V0m82B?@;F{>AL(H...ý’‡?’‡?!ÿ
NETSCAPE2.0
!ùŒÿ,Â
‡þ5h1p A1RÂ’‡IšH|…
”:#5¢4‰#%_¿~
3&


This is with all the emails I reply to and its only happening on my machine and no ones else. Can anyone please explain. I am used outlook 2003 with exchange 2003.

Thank you

F