ALLAH : is the real Name of God
In All holy books i found that the Real name ( and spelling ) of the God is ALLAH :
http://christianity.stackexchange.com/questions/20240/what-word-did-jesus-use-for-god-in-aramaic
"Say: He is God, the One and Only; God, the Eternal, Absolute; He begetteth not, nor is He begotten; And there is none like unto Him. (The Noble Quran, 112:1-4)"
This is how these Noble Verses are translated in the Abdullah Yusuf Ali English translation. Notice that he used "God" for "Allah". The Noble Verses in Arabic are as follows:
"Qul huwa Allah ahad, Allah al-samad; lam yalid wa lam yuwlad; wa lam yakun lahu qufuwan ahad. (The Noble Quran, 112:1-4)"
These Noble Verses clearly prove that "Allah" means Supreme GOD in Arabic, because they start with "Say he is Allah..." Notice that it didn't say "Say his name is Allah...", even though GOD Almighty's Holy Name is "Allah". But the "Say he is Allah..." quote clearly indicates that "Allah" here is a DESCRIPTION or an ATTRIBUTE to GOD Almighty, and not just a personal Name. This clearly proves that "Allah" means the Supreme GOD Almighty in Arabic. There are other Noble Verses that I can present from the Noble Quran that would further prove this point, but I think Noble Verses 112:1-4 are sufficient enough.
When a person embraces Islam, he/she would say:
"I bare witness that there is no GOD but Allah, and Muhammad is His Servant and Messenger."
http://en.wikipedia.org/wiki/Allah
search your self please :
http://www.learnassyrian.com/home.html