Carlos, I did a search on freshmeat.net for batch processing systems, and I found the two below. They are both GNU GPL, but Queue looks like it will do more than we need. Funny things is, Queue was the top item on the page when I first connected to Freshmeat :-) GNU Queue: http://bioinfo.mbb.yale.edu/~wkrebs/queue.html Generic NQS: http://www.gnqs.org/home.htm Let me know what you think of these and what we might be able to do. Thanks. Jeff -- J.W. Bizzaro Phone: 617-552-3905 Boston College mailto:bizzaro at bc.edu Department of Chemistry http://www.uml.edu/Dept/Chem/Bizzaro/ --