I am trying to use dataannotation validation(I am not able to Fire the annotations as yet) in my mvc application. with reference to this article I want to confirm http://www.asp.net/mvc/tutorials/validation-with-the-data-annotation-validators-cs

I am using vs 2008 professional edition . Do I really need to download Microsoft.web.mvc.dataannotation dll (The other dll is already present in the vs). to use(fire) datannotation on the page.? I am using partial views as well on the pages with dataviewmodel class(I will be using formviewmodel class for validation?)