IIS & REST Server

I'm working with REST service in C# language, and i wanna to implement in a IIS 6 running in W2003. Rest service in working well running under visual 2008 who creates a "virtual IIS" for clients communications. The next message is the error: [HttpException (0x80004005): No se encontró ningún controlador http para el tipo de solicitud 'GET'] System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +685 System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +128 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184 Anybody knows how to implement REST services in IIS ? Thanks.