sugarkane - 12:36 pm on Aug 8, 2001 (gmt 0)

Although Arabic varies greatly - the different dialects can be as different as Spanish to Italian - if you transliterate¹ using the Egyptian phonetics you'll be closest to a 'standard'.

Egypt produces much of the region's TV shows etc and the dialect is widely understood. I've seen a transliteration table somewhere, but I can't find it now...

You could also go for Classical Arabic, but this is very formal and not widely used outside of religious and official circles.

¹ my big word of the day