Microsoft has a page that explains this with a few pictures:
http://office.microsoft.com/en-us/help/HA012319531033.aspx
Messages that have attachments are identified by a paper clip icon
in the message list. Depending on the format of the message that you
receive, attachments will appear in two different places in the message.
If the message format is HTML or plain text, attachments
will appear in the attachment box below the Subject line.
The format in which a message is composed is indicated in the
title bar at the top of the message.
Your Outlook is set to use the RTF format for creating email.
- Open your TOOLS menu
- Select OPTIONS
- Select the MAIL FORMAT tab
It is in this window that you can change your message format
from RICH TEXT (which is RTF) to HTML or PLAIN text.
Nikki Peterson