On the reply post page (the page you get when you click 'post reply' on a thread), below text box is "additional Options" Click "manage attachments" browse to where the image is on your computer, then click upload. Photo will appear in your post as an attachment.
The forums also have an image gallery, you can upload photos to that
http://www.the75andztclub.co.uk/foru....php?do=upload
Ali.