I thought this might help people?
1. Go to
http://photobucket.com. 2. Log-in.
2a. Upload your photos. Large as you like. Photobucket will create thumbnails automatically if you stick to the following steps.
3. Surf to the page/album you require (click 'View all' if the images that you want to thumbnail span more than one Photobucket page).
4. Click the checkboxes that are beneath each picture that you would like to thumbnail.
5. Scroll to the bottom of the page and click 'Generate HTML and IMG code'
6. The third box down 'IMG clickable thumbnails for message boards - recommended ' is the box that you require, select that box and it should automatically copy them onto your clipboard for you, but if not, CTRL+A (Select All) followed by CTRL+C (Copy).
7. (CTRL+V) Paste into the forum of your choice, job's a good 'un.