Just go to http://www.technicpack.net/tekkit/
download the tekkit 2 client launch it make sure to pick tekkit 2 on the top LEFT hand corner where it says technic click that and it should gives you options on the bottom its say tekkit click that let it download then log in and log in the server
download the tekkit 2 client launch it make sure to pick tekkit 2 on the top LEFT hand corner where it says technic click that and it should gives you options on the bottom its say tekkit click that let it download then log in and log in the server