Azza wrote:

I am using Microsoft Office Outlook 2003, Windows Vista Basic,

There seems to be a problem with that combination (i.e., Outlook 2003/Vista)
whereby when you receive an HTML message by way of Bcc (the To field will
show "undisclosed-recipients"), the HTML will not be rendered, but will show
as the raw message data. Microsoft is looking into it.
--
Brian Tillman [MVP-Outlook]