Folks: I apologise about the email with the virus. It did get past our defenses. I am going to look into the setup to see if I can tweak it better. My apologies, and please discard the previous email from bioinformatics.org Joe -- Joseph Landman, Ph.D email: landman at scalableinformatics.com web : http://scalableinformatics.com phone: +1 734 612 4615