I'm having a hard time trying to install X-12-ARIMA on my system: Amd64, Ubuntu 9.04. Basically all available executables for X-12-ARIMA where compiled on different systems and do not run on mine. I tried forcing core architecture, eetc. but still the X-12 option under gretl is not working When I visited the official website I downloaded the Binari file ( X-12-ARIMA ) and guess what? I need a fortran compiler which i'm not familiarized with and not only that, I'm also unnable to install the proper fortran compiler . If there's anyone who know what's going on I'd be very thankful. ( I've been searching how to run x-12-arima for a day and i'm running out of time :P) _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. https://signup.live.com/signup.aspx?id=60969