A new demo has been added in the SQL Server 2000 demo portion.The detail of this demo is

Title: How to Remove a SQL Server Role

Objective: The objective of this demo is to teach you the process of removing a SQL Server 2000 role. The changing security requirements of a database can render a Microsoft SQL Server database role obsolete. Remove roles when you have removed all users and are certain that the role and its permissions will not be required in the future.

If you are a subscriber, then click the Demos link in the navigation menu to view the complete list of demos.