The DG834G will replace the blueyonder modem. If you are setting up broadband for the first time then use the blueyonder modem to set it all up, note any settings you may need, and get it all working with the blueyonder modem alone. Then take the blueyonder modem out of the picture completely and use the DG834G. Usually it will auto configure itself during the setup process or you may have to input the settings you noted. Blueyonder won't provide any support for this new DG834G and will not help you. Follow the DG834G instructions when setting it up and completely forget about wireless until you have it working wired, and then set up the wireless part last of all.