Mark, All,
The software that runs this forum is one of the best forum software platforms there is, and it is used by many Clubs and organisations without too much drama.
The TR-Register forum also runs this forum software without an major issues.
Like with all new "toys" it takes a little time to learn some of the quirks.
In the case of IP board, the quirk is posting photos.
If you embed a photo by uploading it directly into the posting it will display as a thumbnail, but will enlarge to full size once you click on it.
Photos uploaded in this way will also contribute to your 500Kb attachment limit, so it may not be the best way to load pictures.
By hosting your photos elsewhere and linking to them using the "Image" button in the bar at the top of the edit window you can display a picture full size in the thread.
You can link in photos from anywhere on the internet, including elsewhere on the TSSC website - such as from the GALLERY, which is part of the forum software.
http://forum.tssc.org.uk/index.php?/gallery/
Load all your photos to the gallery, then click on the one you want to reference to open it in the full display window, then right click on it to get the direct link address, and then go back to the thread where you want to post the picture and click on the "image" button and paste the address into the pop-up box presented. Job done.
This picture is one I've linked to from the gallery - posted by Vitesse203.
Direct link
"Medium" size link
Sorry, some might find it a bit of a pfaff, but its the way it is with this software.
The same technique can be used on other Triumph Clubs forums to do the same thing so that many pictures can be posted in the same post, rather than a single image at the end of the post.