Henk69: This won't work because it uses a php file instead of a true imagefile with a known extension:
Code:

[img]http://gallery.backyardpoultry.com/watermark.php?file=43408[/img]




This way you can show a thumbnail and link to a bigger picture:
Code:

[url=http://i42.photobucket.com/albums/e330/Henk69/platinum/DSC_1348.jpg][IMG]http://i42.photobucket.com/albums/e330/Henk69/platinum/th_DSC_1348.jpg[/IMG][/url]