2 Jan 13, 2008 14:59
Welcome to the forum.
There is a language pack [url=http://b2evolution.net/downloads/0.9/language-packs.html]here[/url]. I do not know if the post you mention is about the same language pack.
This is for B2evo version 0.9. This means it is compatible with newer versions, but you will notice no new strings are not translated yet. 0.9 being really old, there are a lot of blank lines ;)
If you want to help, thanks. In [url=http://manual.b2evolution.net/Localization]the manual[/url] you find a page about translations. Translations are done with [url=http://poedit.sourceforge.net/]poedit[/url]. It loads both the English file from a recent B2evo version as well as the Arabic language file. Do have a look.