Disable PST files in Outlook

For Outlook 2003
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\11.0\Outlook\DisablePST

For Outlook 2007
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Outlook\DisablePST

Outlook 2007 to use DNS Service Location (SRV) records to locate the Exchange Autodiscover service

http://support.microsoft.com/kb/940881

 

 

Great Outlook Calendar FAQ

http://www.its.uiowa.edu/cs/exchange/faqcalendar.html#autoconfirm