Tarek:
Please forgive me for editing your post, as it contained sensitive data.
In reference to your inquiries:
1 - Our WGA Kits support whichever languages Windows does (yes, Arabic).
2/3 - The WGA Kit is made so you can reinstall on the computer which is non-genuine. If both computers are non-genuine, you must purchase individual licenses for both.
4 - Egyptian support offices information is located here, http://support.microsoft.com/?LN=ar-eg&x=4&y=15
Good luck,
-PHil Liu