Microsoft Office SharePoint Portal Server is a enterprise information portal which belongs to the Microsoft Office family. In the next release (version 3.0) the current name drops the word 'Portal' and will be called Microsoft Office SharePoint Server 2007. It is a collaborative portal application based on the Windows SharePoint Services platform, a free component of Windows Server 2003. Windows SharePoint Services offers online publishing of standard file formats. It also has version control, document approval and a basic search facility. SharePoint Portal Server adds search of external content sources, a flexible hierarchy of content areas, enhanced navigation, Single Sign On service and additional personalization features. SharePoint Portal Server's main strength is enabling an organiza