Microsoft E-Reference Libraries gather the best technical information available on Microsoft products and technologies in an easy-to-use format. The four library packages - Helpdesk Support, IT Professional, Developer, and Technical E-Reference Combo - all include a powerful search engine that enables just-in-time access to critical information for fast and efficient problem solving.Microsoft E-Reference Libraries offer the best quality content available from Microsoft Press and from top technical publishers such as Addison Wesley, O'Reilly, and New Riders.With robust content and targeted navigation and search features, the Microsoft E-Reference Libraries help developers, IT professionals, and helpdesk support professionals work smarter and more efficiently.