No pictures automatically downloaded in IMAP messages

[David]

In Trust Center --> Automatic Download, I have "Don't download pictures
automatically..." unchecked. Am I missing some other setting that would
prevent all pictures in all messages from appearing? I always see the
pictures when I access my e-mail at the ISP's web interface or when I
forward the e-mail to accounts that I access in Windows Live Mail.

If it matters, this is Outlook 2007 and an IMAP account.

Thanks much for any assistance,

David