If you hit the reply icon to reply to a post, there is some highlighted text, "board code." It gives the format to put in your reply. But first, your pictures have to be up on a server on the 'net, not just on your hard drive.
There are free websites that will host your pictures. I use [url]www.ehomebook.com[/url] . It's free & has complete instructions. Once your pic is on the web, right click your mouse on the pic and then click on "save image location." Make your post, type the square brackets with "img" in between and then right click again & hit paste. The url of your picture should magically appear. Follow this with "/img" in square brackets & you're done.
Hit the "" icon above this message for reply with quote to see what I typed to get my snake's picture in the message.
[img]http://www.ehomebook.com/users/nglitz/images/SNAKEY--.jpg[/img]
Enjoy