I wrote which e-mail I sent you, maybe it can't arrive at you.
I don't know dos and windows arabic characters.
you should do that:

dos_arabic_str_table="" &&--- put dos arabic characters with SAME ORDER!!!
win_arabic_str_table="أ ب ت ث ج ح خ د ذ ر ز س ش ص ض ط ظ ع غ ف ق ك ل م ن ه و ي" &&--- arabic characters with same order
scan
    repl cname with chrt(cname,dos_arabic_str_table,win_arabic_str_table)
ends 

I know arabic characters rigt-to left (I can read Kuran, but can't speak arabic), this isn't a problem. Only you should put dos-arabic characters in first sting table, put win-arabic characters to second string table..