Hi I wanted to add some extra attribute to GAL like PayrollID , PF number. how to achieve this in exchange 2007 environment

I know of adding additional attribute to AD by modifying the schema but not sure how to make it available in Outlook. You can use notes section though

Hi, You can refer to the article below: Adding attributes to the Exchange details templates http://blogs.msdn.com/b/dgoldman/archive/2007/11/09/adding-attributes-to-the-exchange-details-templates.aspx Note: Trying to add custom mAPIID's causes schema modifications which can leave your system in an unstable state. These changes can and often do make more problem that what it is worth. Xiu Zhang TechNet Community Support