Any good idea conection between LightSpeed and the .NET RIAService?

Hi, I'm trying .NET RIAService and LightSpeed.

The detail of structure is

Silverlight3--RIAService--ASP.NET MVC--LightSpeed--DB(SQL Azure)

But now it seems that between LightSpeed and RIAService is not seamless.
We need to convert LightSpeed object to the RIAService's object.

example)
--DomainService

    // TODO: Create methods containing your application logic.
    [EnableClientAccess()]
    public class TestRiaService : DomainService
    {
        private TestModelUnitOfWork _currentScope = new PerRequestUnitOfWorkScope<TestModelUnitOfWork>(TestRepository.Context).Current;
       
        public IEnumerable<RiaMCourse> GetMCourse()
        {
            var result = new List<RiaMCourse>();

            foreach (var entity in _currentScope.Find<MCourse>())
            {
                var ria = new RiaMCourse(entity);
                result.Add(ria);
            }
            return result;
        }

    }

    public class RiaMCourse
    {
        public RiaMCourse(){}
        public RiaMCourse(MCourse course)
        {
            Id = course.Id;
            Name = course.Name;
        }

        [Key]
        public int Id { get; set; }
        public string Name { get; set; }
    }

--Silverlight3
    public partial class Home : Page
    {
        public Home()
        {
            InitializeComponent();
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            var context = new TestRiaContext();
            var query = context.GetMCourseQuery();
            context.Load(query, (result) =>
                {
                    txtBlockMessage.Text = result.Entities.FirstOrDefault<RiaMCourse>().Name;
                },
                null);
           
           
        }
    }

Thanks,

I'm not sure exactly what you're asking here -- are you looking to automate the mapping between LightSpeed entities (MCourse) and RIA Services data transfer objects (RiaMCourse)?  If so you can probably do this by using the designer to generate data transfer objects and methods to copy an entity into a DTO and vice versa; but I'm not clear if the RIA Services side of things has any special requirements.  If you could provide more info about what you need to do and the problems you're running into then we'd be happy to provide more concrete advice.