If you have a question about the use of STATISTICA, please check the knowledge base of common questions listed in our FAQs. If your question is not answered in the FAQs, please e-mail us, or call (918) 749-1119 Monday through Friday, 9:00AM to 5:00PM Central (US) Time. Please include your serial number (select About STATISTICA from the Help menu to view your serial number) and information about your hardware (the type of processor (CPU), the amount of memory (RAM), and disk space) and the version of the operating system that you are using. If you live outside North America, please contact your local StatSoft office. (Please note: Technical Support is provided only for users of the latest version of the program.).