SQL Server 2005 Books Online September 2007 available for download - update your local copy
As we blogged much on Books Online importance and recent changes to availablility of updated books online for SQL Server 2005 under BOL-Sep2007-MSDN-Technet the same update is available to download.
Do not forget to update your local copies as it will save your time going onto MSDN or Technet whenever you need to refer for any topic.
You can DownloadFromHere and for latest updates on what's new on the documentation refer:
Download an updated version of Books Online for Microsoft SQL Server 2005. Books Online is the primary documentation for SQL Server 2005. The September 2007 update to Books Online contains new material and fixes to documentation problems reported by customers after SQL Server 2005 was released. Refer to "New and Updated Books Online Topics" for a list of topics that are new or updated in this version. Topics with significant updates have a Change History table at the bottom of the topic that summarizes the changes. Beginning with the February 2007 update, SQL Server 2005 Books Online reflects product upgrades included in SQL Server 2005 Service Pack 2 (SP2).