public Object getValueAt( int row, int column ) {
	Map<String,BasicType> t = this.rows.get( row );

	switch( column ) {
	case 0:	return t.get(Constants.KEY_ID); 
	case 1: return t.get(Constants.CONFIG_SERVER_ADDRESS); 
	case 2: return t.get(Constants.CONFIG_SERVER_PORT); 
	case 3: return t.get(Constants.CONFIG_SERVER_PROTOCOL); 
	case 4: 
	    BasicType connectionCount = t.get( Constants.KEY_CONNECTION_COUNT );
	    if( connectionCount == null ) {
		connectionCount = new BasicNumberType(0);
		t.put( Constants.KEY_CONNECTION_COUNT, connectionCount );
	    }
	    
	    return connectionCount;
	    
	    
	default: return "NA"; 
	}
    }