public void userActivatedService(String remoteUser, String service) {
		int index = -1;
		for (int i = 0; i < model.getRowCount(); i++) {
			if (model.getValueAt(i, 0).equals(service)) {
				//caut in arraylist intrarea corespunzatoare serviciului, daca
				//aceasta exista
				int j;
				for(j = 0; j < services.size(); j++) {
					if(services.get(j).getService().equals(service)){
						services.get(j).addUser(remoteUser, "No offer", new Integer(0));
						
						JComboBox comboBox = new JComboBox();
						
						if (model.getValueAt(i, 2) instanceof JComboBox) {
							comboBox = (JComboBox) model.getValueAt(i, 2);
							comboBox.addItem(remoteUser);
						}
						
						else if (model.getValueAt(i, 2) instanceof String) {
							comboBox.addItem(remoteUser);
						}
						
						model.setValueAt("active", i, 1);
						model.setValueAt(comboBox, i, 2);
						auctionTable.setModel(model);
						return;
					}
				}
				if(j == services.size()) {
					ArrayList<String> users = new ArrayList<String>();
					users.add(remoteUser);
					//nu exista serviciul; il adaug in lista
					this.populateServiceUserList(service, users);
				}
			}
		}
	}