It is quite a while since i setup my system,but as far as i remember i have not had problems with mythtv setup on a client,in the Language screen you just choose the Language you want to have and on the next screen you can then enter the mythcore IP and the Database you want to use and the password for it. End the settings and mythtv reloads and everything is fine. The Database name and password you can see in the cores mythtv setup.
Hope this helps for your next client setup.
Howie