Como itens de lista índice SharePoint Portal Server 2003 no SharePoint Server 2007

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.Office.Server.Search.Administration;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Portal;
using System.Web;
using Microsoft.Office.Server;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (SSPPath.Text != "" && CrawlPathText.Text != "")
            {
                try
                {
                    SPSite site = new SPSite(SSPPath.Text);

                    SearchContext.GetContext(site);
                    Content content = new Content(SearchContext.GetContext(site));

                    CrawlRule rule = content.CrawlRules.Test(CrawlPathText.Text);

                    if (rule != null)
                    {
                        rule.ContentClass = "0";
                        rule.Update();
                        MessageBox.Show("ContentClass was set to: " + rule.ContentClass.ToString());
                    }
                    else
                    {
                        MessageBox.Show("There was a problem. Make sure the Crawl path is correct.");
                        CrawlPathText.Focus();
                    }

                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message.ToString());
                    SSPPath.Focus();
                }
            }
            else
            {
                MessageBox.Show("Need to enter a SharedServices Path as well as the name to a Crawl Path");
                SSPPath.Focus();
            }
        }
    }
}