Jinky - do not despair. I used the same formular on DCM as I didn't use their galleries much, and couldn't be bothered loading pictures twice (flickr and DCM). The same applies here, as I don't like the galleries much. But that's another story
I copied the formular into a Word document, all ready with the correct bracket/spacing. I loaded this document when I wanted to show a clickable photo from flickr, and copied the formular into the thread in the forum. Then all I needed to do was to replace the two adresses with the two urls from flickr.
Sounds a bit long, but it's not really. And it's only one photo a week