Let's assume you're posting a reply in an existing thread and want to include some pictures.
Click the "Post Reply" button, not the "Quick Reply " button.
If you're starting a new thread click the "New Thread" button in the appropriate forum section instead. Then follow the rest of these instructions
Scroll down the page and Click the "Manage Attachments" button.
Click one of the five "Browse" buttons.
Navigate to the image you want to post and either double click it or click the "Open" button. Repeat this step if required to load further images.
Click the "Upload" button and
WAIT until your images have been uploaded. You'll see the message "Uploading File(s) - Please Wait" displayed whilst uploading is in progress.