WCF 3.5

http://msdn.microsoft.com/en-us/magazine/cc163289.aspx

Getting Started with Windows Communication Foundation
http://msdn.microsoft.com/en-us/vbasic/bb736015.aspx

WCF RoadShow Sample Code
http://www.dasblonde.net/2007/09/15/NET35RoadshowSampleCode.aspx