Here is the step-by-step of how to upload photos via Azbilliards forums.
While in a post (topic or reply) box.
Scroll down to "Additional Options" and look for "Attach Files" >> Click "Manage Attachments" button. A pop-up box should appear >> At the top of the box look for "Upload File from your computer". Click "Browse" and you'll be able to browse threw your computer for the file. >> When you've selected the file click "OK" >> Click "Upload" in the upload box >> Scroll to the bottom of the upload pop-up box and click "Close this window".
When you're all done typing your comment in the comment box, just click "Submit Reply" and your image will be there!
Edit: Additionally if you want to add more images, just follow the same steps while in the upload pop-up box. And if you want to remove any of the images, just look for the image you uploaded in the managment portion and click the "remove" button next to them.