void RateBtn_Click(Object sender, EventArgs e)
{
  String xmlresult;
  xmlresult = "<Data>";
  foreach (DataGridItem item in MyDataGrid.Items)
  { 
  xmlresult += "<ClassCode>" + item.Cells[2].Text +
    "</ClassCode>";
  xmlresult += "<Coverage>" + item.Cells[5].Text +
    "</Coverage>";
  }

  xmlresult += "</Data>";
  ACMEInsuranceWS ows = new ACMEInsuranceWS();
  xmlresult = ows.GetPolicyRating(xmlresult);

  XmlDocument doc = new XmlDocument();
  doc.LoadXml(xmlresult);
  XmlNode root = doc.FirstChild;
  int count = root.ChildNodes.Count / 4;
  XmlNode sibling;

  for(int i = 0; i< count; i++)
  {
  MyDataGrid.Items[i].Cells[6].Text = 
    root.ChildNodes[i * 4 +   2].InnerText;
  sibling = root.ChildNodes[i * 4 + 2].NextSibling;
  MyDataGrid.Items[i].Cells[7].Text = sibling.InnerText;
  }	
}