Define custom label for SharePoint store
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\common\offline\options Options
name text Description
You can use this setting to define a custom label for the SharePoint Lists PST and most other places where the term "SharePoint" is used in Outlook. (Setting this value replaces the word "SharePoint" in Outlook strings with the value you specify.) A custom label might be particularly useful when deploying a third-party server that supports the same Microsoft SharePoint Foundation Web services Outlook uses for synchronization.