I came across this cool seriel by Scott Mitchell that covers the membership, roles and profiles for ASP.NET 2.0.

Part 1 - learn about how the membership features make providing user accounts on your website a breeze. This article covers the basics of membership, including why it is needed, along with a look at the SqlMembershipProvider and the security Web controls.

Part 2 - master how to create roles and assign users to roles. This article shows how to setup roles, using role-based authorization, and displaying output on a page depending upon the visitor's roles.

Part 3 - see how to add the membership-related schemas to an existing database using the ASP.NET SQL Server Registration Tool (aspnet_regsql.exe).

Part 4 - improve the login experience by showing more informative messages for users who log on with invalid credentials; also, see how to keep a log of invalid login attempts.

Part 5 - learn how to customize the Login control. Adjust its appearance using properties and templates; customize the authentication logic to include a CAPTCHA.

Cheers,

-Carlos