Ok, I now understand why the product lacks anti-spam. When installing the trial product on a Windows 2003 Server, Exchange 2003 the installer does not show Anti-spam. I know this because when the installer is run on a Windows 7 Pro workstation it is showed, Please see the attached. I have raised a ticket.
I now see that the product although saying it supports Windows 2003, Exchange 2003 actually only provides Anti-Virus not Anti-Spam. On the ticket I have raised the point why bother mentioning 2003 support in all the literature when half the product is missing?