Many thanks Robert, I am going to a conference this coming weekend, so hopefully, it will give me plenty of time to do some reading on the way there and back. regards David Quarmby quarmby@xxxxxxxxxxxx ----- Original Message ----- ** To leave the list, send a message to:- ** access-uk-request@xxxxxxxxxxxxx ** and in the Subject line type ** unsubscribe ** For other list commands such as vacation mode, send a message, to ** access-uk-request@xxxxxxxxxxxxx with the Subject:- faq