Dear Diskcrash, I did. I also downloaded Scilab so I'll try that out, but I am looking for something that requires minimal effort in translating between Matlab and another language. Also, something that works well with text files, something that I noticed Matlab does not do well (in fact, I used a modified Perl script for some of that). I will, however, try it out once I figure out Cygwin a bit better- I am currently using WinXP. Thanks, Dr. Guy