Add nodes to a new xmldocument using vb.net

I have the following code below in which I am taking an rss feed and converting a section of it into a string.....

What I need to do...is take the node at each iteration of the For loop and add it back into a new xml.xmldocument....and then pass the full xml document to sqlserver adn store it as varchar I suppose...
not sure the best way to store it...but I need the entire xml file to be stored in one column of a database table.  My main concern is how to recreate the xml collection mentioned above....
Here is my code so far:


 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGrab.Click

        Dim xmldoc As New Xml.XmlDocument
        Dim xmlnlist As Xml.XmlNodeList
        Dim xmln As Xml.XmlNode
        Dim xmlRevDoc As New Xml.XmlDocument

        Try
            Dim strURL As String = "http://feeds.feedburner.com/wnbc/sports"

            xmldoc.Load(strURL)
            xmlnlist = xmldoc.SelectNodes("//item/description")

            For Each xmln In xmlnlist
                Dim description = xmln.InnerText
                lblXML.Text += vbCrLf + description + vbCrLf + vbCrLf
            Next
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
    End Sub