No Presence Information available in Outlook 2007

Last week I spent some time building up a fresh new laptop with Windows 7. Installed Office 2007 en of course the Office Communicator,  the OCS Attendant Console and the Live Meeting client with the Outlook Conferencing add-ins.

So far so good, everything seemed to work as expected. Except one thing, there was no presence information available in Outlook.  The personnames options in Outlook were grayed out, so unable to set. I tried all the possible Outlook GPO settings but still no luck. Pretty annoying and frustrating

After some more research I noticed the following registry key:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Call Integration]
Where the REG_SZ:"IMApplication" Value contained the data: Attendantconsole.exe

Hmm, this couldn't be right, I only use the Attendant console for testing purposes and nothing else. I changed the registry value mentioned above to: Communicator.exe. Restarted Outlook and... problem solved.  So it seems that if you install the OCS Attendant console after the Office Communicator it assumes the Attendant Console will be your default IM Application. Conclusion you can install both applications (but not run at the same time) but only one of them can be the preferred client to integrate presence in to Outlook.