As a quick follow up, the spelling "disc" is probably a variation of the word discus, the heavy flat disk that is thrown in the Olympics. The original Greek word that disk and discus derives from is diskos. Offhand, I don't know what the spelling was changed from k to c for the word discus but I suspect it has to do with the hard k sound being followed by a vowel or something. Ron For a web-based membership management utility and information on list policies, please see http://nibec.com/24hoursupport/ To unsubscribe, send a blank email to 24hoursupport-request@xxxxxxxxxxxxx with "unsubscribe" (without quotes) in the subject.