- First of all, please write with lowercase characters.
- update your Joomla 1.7 (and jD) to the last Joomla and jD release
- when the arabic language is not finished, you can help to make it ready
But you has not checked it!
The language files for the component are finished! See pics.
When you has downloaded the two files, you must rename it like: ar-SA.com_jdownloads.ini and ar-SA.com_jdownloads.sys.ini
Move it then in the language files folders from your Joomla installation.
Sorry... here are the pics...