Just found a few links to WCF .NET 3.5

http://msdn.microsoft.com/en-us/library/ms751532.aspx

http://www.aspfree.com/c/a/ASP.NET/Developing-Business-Logic-using-the-WCF-Service-Library-with-VS2K8-and-ASPNET-35/

WCF, WF and .NET 3.5 Whitepapers by David Chappell

The .NET Framework 3.5 Enhancements Training Kit includes presentations, hands-on labs, demos, and event materials. This content is designed to help you learn how to utilize the .NET 3.5 Enhancement features including: ASP.NET MVC, ASP.NET Dynamic Data, ASP.NET AJAX History, ASP.NET Routing, ADO.NET Data Services, ADO.NET Entity Framework, WCF 3.5 SP1, and the .NET Framework Client Profile.

You can find it at http://www.microsoft.com/downloads/details.aspx?FamilyID=355c80e9-fde0-4812-98b5-8a03f5874e96&displaylang=en

Ken Zheng