COMBO BOX IN MVC 2

[Hari]

Dear Experts,

I am using the MVC2 WEB application .
I have downloaded dll from this site http://simple-telerik-extensions.googlecode.com/svn-history/r14/trunk/telerik/Binaries/Mvc2/

I am using the following code in my view
   <%
        Html.Telerik().ComboBox()
            .Name("MenuIDs")
            
        .Render();       

                 %>
i am getting following error please help me
 'Telerik.Web.Mvc.UI.ViewComponentFactory' does not contain a definition for
'ComboBox' and no extension method 'ComboBox' accepting a first argument of type
'Telerik.Web.Mvc.UI.ViewComponentFactory' could be found (are you missing a
using directive or an assembly reference?)