ASP.NET Roles Security and ASP.NET Menu
http://weblogs.asp.net/scottgu/pages/Recipe_3A00_-Implementing-Role_2D00_Based-Security-with-ASP.NET-2.0-using-Windows-Authentication-and-SQL-Server.aspx http://weblogs.asp.net/jgalloway/archive/2008/01/26/asp-net-menu-and-sitemap-security-trimming-plus-a-trick-for-when-your-menu-and-security-don-t-match-up.aspx