Possible Duplicate:
How to Prevent Visual Studio launch WcfSvcHost.exe in Debuggin?
When I debug a solution with a WCF service library, VS 2008 starts the WCF Service host by default. Is there a way to turn this off so that I can use my own managed Windows service host?
Follow these steps to disable the Test WCF Client:
ProjectTypeGuidselement.{3D9AD99F-2412-4246-B90B-4EAA41C64699};