MVC3 doesn't recognize MvcContrib namespace in Razor View

I'm trying to paginate something with MvcContrib's Html.Pager(), but my razor views can't reference the right namespace.

Controller is ok:

using MvcContrib.Pagination;
...
public ActionResult List(int? page)
{
    return View(new UserRepository().GetUserList().AsPagination(page ?? 1, 10));
}

But, the view can't make sense of either:

@using MvcContrib

OR

@Html.Pager((IPagination)Model)

I installed MvcContrib via NuGet. I tried adding MvcContrib, MvcContrib.UI and MvcContrib.UI.Html namespaces to in web.config with no luck. Did I miss something?