Each resource in Project Server 2003 and Project Web Access must have a user account created before he or she can log on and interact with project data. Project Server 2003 includes two types of authentication for user accounts: Windows authentication (domain accounts) and Project Server authentication (user name and password accounts). Users with accounts of either authentication type can be given access to any area of Project Server, Project Web Access, or Project Professional. However, Windows authentication is required for the following enterprise features:

• Portfolio Analyzer   Portfolio Analyzer requires Windows authentication because it uses SQL Server 2000 Analysis Services.
• Windows SharePoint Services Documents, Issues, and Risks   Windows SharePoint Services requires Windows authentication in order for users to be able to access the Documents, Issues, Risks pages of Project Web Access. Users who have accounts that use Project Server authentication might be able to access these pages, depending on the configuration; however, only Windows authenticated users are able to use every feature in these areas.
• Membership in the Enterprise Resource Pool   Windows authentication is required in order for a user to use Active Directory to add resources to the Enterprise Resource Pool.
• Synchronization of security groups or the Enterprise Resource Pool with Active Directory   Active Directory requires Windows authentication.

Users can be added in Project Web Access in the following ways:

• A Project Server administrator can add users one at a time in Project Web Access in the Manage Users and Groups section of the Admin page.
• Active Directory and Project Server 2003 can be configured to synchronize the Enterprise Resource Pool with an Active Directory security group.