Hello James, Thank you for the pointers and key words. I'll read that and come back when I have an clearer idea of things to do. Sincerely yours, david -- GPG/PGP key: A3AD7A2A David MENTRE <dmentre at linux-france.org> 5996 CC46 4612 9CA4 3562 D7AC 6C67 9E96 A3AD 7A2A