Please post your question on the forum.
On the main menu to the left, you will see a link to "Discussion Forums." This is where such matters as fonts, script display, and other similar matters are discussed. KudoZ is for terms, words, expressions, and language and translation issues.
It will be very helpful to describe your difficulty in fuller detail. For instance, are you referring to Arabic web pages displaying Greek letters in your browser, or are you referring to Arabic letters in other applications, such as word processing software? Each problem has its own solution.
To give you appropriate help, we will need to know your operating system (Macintosh, Windows, etc.) and which flavor (Windows XP, 2000, Me, NT, 98, 95, etc.). We will also need to know the application that is giving you a hard time. If it is your browser, then is it Internet Explorer, AOL browser, Netscape Navigator, or something else. We also need to know the version number.
Help should come your way very quickly as soon as we get these details. As you will see, implementing the configuration will be very easy.