Dushyanth Jyothi

ASP.NET 2.0 Membership, Roles, Forms Authentication, and Security Resources
http://weblogs.asp.net/scottgu/archive/2006/02/24/ASP.NET-2.0-Membership_2C00_-Roles_2C00_-Forms-Authentication_2C00_-and-Security-Resources-.aspx

Using Active Directory to authenticate users to your ASP.NET Web Site.

http://www.beansoftware.com/ASP.NET-Tutorials/Forms-Authentication-Active-Directory.aspx
http://blog.evonet.com.au/post/2008/11/05/Using-Active-Directory-to-authenticate-users-to-your-ASPNET-Web-Site.aspx
http://msdn.microsoft.com/en-us/library/ms998347.aspx

Storing Hierarchical or tree like structured data in a Database
http://www.sitepoint.com/article/hierarchical-data-database

http://www.evolt.org/article/Four_ways_to_work_with_hierarchical_data/17/4047/index.html

Beginning SQL Server 2005 XML Programming by Srinivas Sampath [21 February 2006]
Source:http://www.simple-talk.com

http://www.simple-talk.com/sql/sql-server-2005/beginning-sql-server-2005-xml-programming/