I will try to tell you how I do it.

First, you have to have an online account to store your pictures. I use Photobucket, the free version. Follow their directions to send the photo to your account there.

Then when you type your message in the forum, just go to that account (Photobucket or whatever) find the picture select the HTML code under the picture (you will have other choices, but the third one down, HTML, is what works here. Click on it (will show copied) then go back to the forum and paste (right click) the copied code where you want it in your message.

When you preview the message, you will see if it works for you.

Hope this is clear.

Try these guys www.bigredwire.com.au they ship to the USA and have a great seecion of gates to match the wire