My thanks to you all for your suggestions. Since I posted yesterday, I have been burdened with domestic duties - corrective decorating after having new doors and windows installed. (I had been practising the ancient art of procrastination but have now had the riot act read to me.) When I have time to digest all your advice I will proceed and post the results. Thanks again, John -- John McCartney j.mccartney@xxxxxxxxxxxxxxxx ------------------------------------------------------------ To change, suspend or cancel your subscription go to //www.freelists.org/list/artworks ------------------------------------------------------------