I've tried this week everything I can think of to get this code to
work , can any kind soul take a look at my code and my what should be
a simple task and help me out. I've looked in books, websites, and
can't find a solution... thanks!

I have an aspx for with a textbox and a button. The goal is to simply
have the user type a message, hit the button and it should append to
the XML file. I can open the aspx in the browser with no problem, but
the XML file does not get updated. What's wrong with this code?
Thanks!

<script runat="server">
   Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
       If Not IsPostBack Then
           Dim ds As New DataSet()
           ds.ReadXml(Server.MapPath("timeline.xml"))
           txtNewEvent.DataBind()
           ds.Dispose()
       End If
   End Sub

   Private Sub btnSubmit_Click(ByVal sender As System.Object, _
   ByVal e As System.EventArgs) Handles btnSubmit.Click
       Dim ds As New DataSet()
       Try
           ds.ReadXml(Server.MapPath("timeline.xml"))
           ds.Tables(0).Rows(0).Item("Event") = txtNewEvent.Text
           ds.WriteXml(Server.MapPath("timeline.xml"))
       Catch
       Finally
           ds.Dispose()
       End Try
   End Sub
</script>