I have about three portals on a site, but there is one that I would like to use Google Analytics for, but keep from showing up in the search results.  I thought of using the metatag:

<meta name="robots" content="noindex">
in the default.aspx, or perhaps using robots.txt, but both of those would probably block all of the other portals as well, right?

Is there any way of limiting one portal from being indexed? 

Thanks,

Kevin

Erik,
Your code didn't work for me (threw errors).

The following snipped worked:

<script runat="server">
    Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
            Dim descriptionHtmlMeta As New HtmlMeta()
            descriptionHtmlMeta.Name = "robots"
            descriptionHtmlMeta.Content = "noindex"
            Page.Header.Controls.Add(descriptionHtmlMeta)
    End Sub
</script>