Actually I use MOSLEM because thats how it was spelt in New Zealand when I was a child...
I dont know what the correct spelling should be...
I knew then that the MOSLEMS wanted to kill me because I was a Christian...
http://hnn.us/articles/524.html
By contrast, a Moslem in Arabic means "one who is evil and unjust" when the word is pronounced, as it is in English, Mozlem with a z.