/// <summary>
        /// Get website id on websitename
        /// </summary>
        /// <param name="serverName">Name of the IIS server e.g. localhost</param>
        /// <param name="websiteName">Name of the website e.g. test</param>
        /// <returns>
        /// Less the 0, site does not exist
        /// Id of the existing site
        /// </returns>
        public int GetWebSiteId(string serverName, string websiteName)
        {
            int result = -1;

            DirectoryEntry w3svc = new DirectoryEntry(string.Format("IIS://{0}/w3svc", serverName));

            foreach (DirectoryEntry site in w3svc.Children)
            {
                if (site.Properties["ServerComment"] != null)
                {
                    if (site.Properties["ServerComment"].Value != null)
                    {
                        if (string.Compare(site.Properties["ServerComment"].Value.ToString(), websiteName, 

                         false) == 0)
                        {
                            result = site.Name;
                            break;
                        }
                    }
                }
            }

            return result;
        }