Hey Webster (and anyone else that WANTS to do it)...thumbnail links are quite easy to do, and this board allows it.
Like this...

What you need to do, if you really WANT to use thumbs, is make a thumbnail of the picture you have. Make it small in Kb size too..quite easy using PSCS2 or similar imaging sw.
Then, host the FULL SIZE image and the THUMBNAIL image with someone like
PHOTOBUCKET.
Now, in your post, use the INSERT IMAGE icon, and link to the thumb image on the host. Then, highlight the link it puts in the post, and then use the URL icon to link it to the full size image.
So it will look something like this in the post...except with the usual [-] brackets, and not the (-) that I used here to stop it working.
(url=http://img.photobucket.com/albums//Scorpion/lolzcat.jpg)(img)http://img.photobucket.com/albumsl//Scorpion/tholzcatsmall.jpg(/img)(/url)
Just repeat to add more images...only thing is, they will probably go down the page, not across, but that doesn't matter.
So, if you have a few pictures you want to show in one post, then it would be easy to prepare them in advance within a few minutes, then post them as described here
Scorp.