Mine's done. It worked, it died and now it's scrap and I'm using new mags to build an experimental alternator.
When you post, above the dialogue box, there is a button that says "Img". If you rest your cursor over it, it will say: [img ]
http://image_url [/ img]. That's how you post pics. You have to stick them on the web somewhere, then link to them.
Don't type it in like I did. I purposely put some spaces in there so it would appear.
If you don't have your stuff on the web already, you'll need to either make a website or use one of the free web services to host your files.