http://blogs.msdn.com/publicsector/archive/2008/05/14/free-training-on-net-3-5-sp1.aspxI just came across this update to the .NET 3.5 Enhancements Training Kit from Jonathan Carter .  If you've seen my ASP.NET 3.5 Extensions Preview webcast and are looking for the code, then you will want to download the kit.  I used the kit asen-USCommunityServer 2.1 SP1 (Build: 61025.2)