MSDN has published both of the articles from this blog in their latest release of MSDN. The articles can be found at the following two URL's.
Microsoft ASP.NET 2.0 Member/Role Management with IIS
Part 1: Security and Configuration Overview (or Here at peterkellner.net)
Part 2: Implementation (or Here at peterkellner.net)
There is no source code with Part 1. The source code for Part 2 can be downloaded from the download section, or go directly to this file:
Source Download Here
(this source code replaces what was here before. It has many improvements and has been tested with the released VS2005)