Stuck with Novell LDAP

It is ok to to connect to LDAP with port 385 by the following:

public bool ConnectLDAP() {
        string userDN = "urDN"; // Change to match your Distinguished Name (DN)
         LdapConnection ldapConn = new LdapConnection();
        ldapConn.Connect("urServerAddr", 389); // 389 is the default port.

        if (ldapConn.Connected) {
            try
            {
                 ldapConn.Bind (ldapVersion,userDN,Password.Value);            
                 return true;    

            }
            catch(LdapException ldapErr)
            {
                Response.Write(ldapErr.LdapErrorMessage);
                return false;
            }
        }
}

However, when I try to connect it with SSL, I got error msg:
Novell.Directory.Ldap.LdapException: SSL Priovider not found

public bool ConnectLDAP() {
        string userDN = "urDN";
        int    ldapVersion  =  LdapConnection.Ldap_V3;
        LdapConnection ldapConn = new LdapConnection();
        ldapConn.SecureSocketLayer = true;
        ldapConn.Connect("urLDAPAddress", 636); // SSL

        bool t;
        if (ldapConn.Connected) {
            try
            {
                ldapConn.Bind (ldapVersion,userDN,Password.Value); 
                return true;

            }
            catch(LdapException ldapErr)
            {
                Response.Write(ldapErr.LdapErrorMessage);
                return false;
            }
           
       }
       else
       {
            Response.Write("Not Connected!");
            return false;

       }

}

I have searched most of the google.. found nothing but ssl connection only available with mono...
http://forge.novell.com/modules/xfmod/newsportal/article.php?group_id=1318&msg_id=575&group=novell.devsup.ldapcsharp
anyone try with msft?