[TYPO3-project-seminars] change default language

[Anna Schoderer]

Hi,
I've successfully installed your (great :) ) typo3 extension seminar 
manager and it works quite fine. the only problem I have, is how to 
change the default language? I've allready changed the strings in my 
listview, but the "back"-link and the page browser links are still in 
english and I need them in german. I read about the language key, but 
I'm very new to typo3 so perhaps you could help me?

thanks and best regards,
anna