Yesterday (2 dec 2004) I gave a presentation on .NET authentication, authorization concepts, en then went on to the authorization application block and AzMan.
This weekend I will post the slides and demo code on http://www.u2u.be/presentations.aspx
Sorry, code will be posted on http://www.u2u.be/MSDNSessions.aspx
BTW, if you can't find the code, send me a mail and I will send it to you ASAP. Me thinks something went wrong... :(