First, you can do the link as Psycho' said.
Imageshack.us or tinypic.com are just two of the many free image hosting sites.
You can upload your pictures there, and when they're finished, the site will supply you with a direct URL for the image.
After that, you can take that and post it here for us.
Or, you can take the URL and use this code:
CODE
[img]URL[/img]
And place the direct URL where it says "URL" and that will post the picture here on the forums. ;D
Did I help at all?
And I agree with what Psycho's last post.
(Plus, It'd be a big bonus if you didn't try to debunk the image before seeing it.)