Hi, I'm taking a class "Principals of Programming Languages" and this week we learned Fortran. So, I installed g77 (using apt-get) and typed in a simple Fortran program. PROGRAM FOR1 I = 2 PRINT 10, I 10 FORMAT (1X, I5) END I saved my source file as for1. I don't know what extension g77 expects. I then tried to compile with g77 for1, but I got an error saying the file was in the wrong format. Maybe I had my columns mixed up? or maybe someother syntax error, or maybe I didn't have the correct extension on the filename? In any case I thought I would get a more clear compile error. (I'm on a different machine today and I don't have the exact error message). I looked thru the extensive documentation but could find an example of a simple fortran program and how to compile it using g77. Does anyone have any tips or suggestions for me? Thanks! Jim __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail