If you didn't make it down to PDC in Los Angeles, or if you did and would still like to see the final slides and/or sample code from the presentations, head over the public Commnet web site (Commnet is the event Web site that is usually only accessible to attendees -- but not this year).  Although it asks you to sign-in with your Microsoft Passport, it is not required.  Here's a link straight to the session download page.

   -Matt