Adding a top menu position

Hi,

I'd like to add a new module / menu position on top of the current mainmenu position; I'dd like to add language selection on top - right position above the menu.

1- Understood how to create position in templatedetails.xml but
2- Cannot modify other files to get the new position.

Thanks Yannick

Step by step tutorial how to add new module position how will find here >> http://www.gavick.com/documentation/joomla-extensions/how-to-add-new-module-position/

Please tell me on which step you facing problems.