Posting photo....there is a tutorial in this forum, somewhere. Anyway, here's how I do it.
I use photobucket.com and upload my pics to it.
Next open the pic in photrobucket that you want to put on the forum, and you'll see a little box-menu beside the picture, entitled 'Links to share this photo. Click on the bottom item in the list - IMG - this will put a copy of a link to the photo on your clipboard.
Start typing your message on the forum and when you get to the point in the message where you want to imbed your photo, just use Ctrl-V, and this will add the link into the message.
Give it a go....
Les