Try http://www.britarch.ac.uk/BA/ba77/feat2.shtml for a more archaeological approach to the subject. Andy N --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 000754-4, 06/07/2007 Tested on: 10/07/2007 16:15:15 avast! - copyright (c) 1988-2007 ALWIL Software. http://www.avast.com