Outlook 2003 new mail alert problem

[Davemusic]

For some reason I can't get the email alert popup to work. I have all the appropiate boxes checked. I have a sound assigned for new messages and I have Outlook as the default email client. I can get the preview to work in the options menu and can control how long it stays on the screen, etc. but it won't work when new mail comes in(even though new messages appear in the inbox). Outlook Express will give me a sound and show a new mail icon in the tray if I'm using it.
Is there anything I've missed?


Dave