if( queryString != null ) {
// Process existing parameters, if not already done so
// ( otherwise we'll process some twice )
realRequest.parameters().handleQueryParameters();
// Set the query string - the sum of the new one and old one.
String oldQS=realRequest.queryString().toString();
String newQS=(oldQS==null ) ? queryString : queryString + "&" +
oldQS;
realRequest.queryString().setString(newQS);
// Process the additional parsm. We don't know if the old