Outlook 2007 does not support that display, probably because it would conflict with the calendar overlap feature. If you have a retail version of Office/Outlook 2007, I suggest that you file a support incident on this issue. This is the best way to let Microsoft know that the application is missing something. Unlimited support for Office/Outlook 2007 is free for the first 90 days after activation. See
http://support.microsoft.com/gp/vista_supoffnew for more information on this support policy.
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Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers