Go to your image gallery, click on the pic that you want to post. Scroll down to the bottom of the page and you'll see the image information:
Poster: viperdrummer (see this users gallery)
Views: 2
Date: Mon Sep 5, 2005
Filesize: 56.2k, 321.0k
Dimensions: 1280 x 960
Keywords: DSCF0002
UBBCode: [ img]http://gallery.viperclub.org/data/500/1301DSCF0002-med.JPG[/img ]
Now highlight and copy the information after UBBCode:
In the case of this image it'll look like this:
[ img]http://gallery.viperclub.org/data/500/1301DSCF0002-med.JPG[/img ]
Paste it in your post and you'll get this: