Change language-help needed

[werk]

Hello!

I got the new language file from user Prevalje. The file is called slovenian.php, and now i need to change it so my joomleague component will be in slovenian lang.
I allready copied the file to components/com_joomleague/language/ and also to administrator/components/com_joomleague/lang/ but nothing changes.

So here is my question: What did i do wrong,and how to install new language?
I am running joomla 1.5.12 stable and joomleague 0.93

sorry for my english and thank you for your help!