Use a personal provider to manage users and roles in a web application.
Developing custom ASP.NET Membership and Role providers reading users from custom section in the web.config
Custom Membership, Role Providers, Website administration tool, and Role based access to individual files
Extending ASP.NET role based Security with Custom Security Module (Permission Based, Page Level Authorization)
Developing Next Generation Smart Clients using .NET 2.0 working with Existing .NET 1.1 SOA-based XML Web Services