how do i acess the header in the page so that i can add the link tag dynamicaly to the page???

Dim header As Web.UI.HtmlControls.HtmlHead
        header = TryCast(Me.Page.Header, Web.UI.HtmlControls.HtmlHead)
        If header IsNot Nothing Then
            Dim link As New HtmlLink
            link.Attributes.Add("href", "~/whatever.css")
            link.Attributes.Add("media", "screen")
            link.Attributes.Add("rel", "stylesheet")
            link.Attributes.Add("type", "text/css")
            header.Controls.Add(link)
        End If