Dear Ox-user, I am a newly graduate student. I am using an Ox Professional recently. I believe that I should start with writing a simple program to understand an Ox program structure. Is there someone can guide me to write a simple program to perform Box & Jenkins ARMA model? By the way, I have the Ox manuals but I cannot use it. Thank you in advance. Heba. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp