Hi Ulrich > tried to send the requested program concerning averaging but the mailer > stated 'undeliverable' for the mails with and without the > attachements. Mmh, strange. You can use my usual e-mail address <pit@xxxxxxxxxxxxxxxx>. Maybe the server of my provider had problems for some time? Best regards Peter -- Mit freundlichen Grüßen Peter Karp mailto:pmailing@xxxxxxxxxxxxxxxx