Thank you all very much for this informative discussion. I get the digest version of the list but, in the interests of world peace, I have manually added the appropriate in-reply-to threading header. Please forgive me if the attempt fails. Regards, Jim -- *** e-mail is NOT a secure channel *** James B. Byrne mailto:ByrneJB.<token>@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3CE delivery <token> = hal