Did you upload your sig? If so, it works the same way.
First, you need to find a site that will host your pics for you - preferably for free. I use imageshack.us. But there are others.
You can use whatever site to upload photos from your device to their site.
Once you do that and you can see the photo on the site the way you want to see it, you can grab the naked url for the photo. You can get it by right-clicking on the photo, or they may have it for you to copy. But right-clicking is simple. After you rightclick the photo, you'll see the option in a menu (the exact wording depends on what browser you're using).
Next paste the url in a post and bookend it with [url] and [/url].
The photo will appear in the post. It it's an oversized photo, it will automatically be made smaller, but readers can view the full size by clicking on that photo in the post.
Simple.
