Hello folks,
I am in a very similar situation. I just purchased Office 2003 Professional (Microsoft did a great job on this package!!)...anyhow, instead of using Outlook Express 6 for e-mail, I now use Outlook 2003 for e-mail.
When I started Outlook, I did notice the new 'Outlook/Exchange' splash sceen too. However, I also thought the 'scanner icon' in the sys tray was not showing up. After recieving some e-mails, I did notice that the icon DOES show up...but, it does it very quickly (compared to Outlook Express). When I say quickly...I mean the icon just flashes for a split second...hard to notice sometimes.
Maybe you are having the same thing...the icon appears and disappears so fast you do not see it. I know it may sound rediculous, but that is what is happening on my PC.
I have aslo tested with the eicar test virus, and everything checks out good. Avast! wouldn't even let me attach the file at first!! The Outlook/Exchange scanner is working very well here.
Hope you get get yours working too!