Am 04.06.2007 um 16:22 schrieb Jens Vagelpohl: > There's no "magic" way to do this. I'd derive from an existing type > and add what you need. Thanks for the info, it seems deriving from Image is what I need to do. Charlie -- Charlie Clark Helmholtzstr. 20 Düsseldorf D- 40215 Tel: +49-211-938-5360 GSM: +49-178-782-6226