Confused, what do I need to create RESTful web service in my ASP.NET web application?

I am using VS2008 pro to develop my web application.
my project target framework is 3.5.
I can add web service (.asmx) to it.
But there is no .svc for me to add, do I need to install WCF REST Starter Kit? (but it is only in Preview 2)


Or should I add an WCF service project to my solution?
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