Hey Gordon,
I just found this from Piper (did a search on mac):
Moe! I opened my own pic (from the gallery) in a new window. On a mac you ctrl-click on the pic and just select that option. On a Windoze machine I think you just right click to get the same option. Then you automaticly (sp) get this new window with just your pic and the address to it. Then it's just a matter of copying this exclusive address and pasting it using the "Instant UBB Code" link you get when posting or replying... Did that make any sense?