Melissa,
Most of these turds have done the exact same thing so don't let it get to ya. Not all boards post images the same exact way.
First, move your image to an online host (your personal one or an image host). Then, come back here and, using the "image" button on your "Post Reply" section, input the "http://
www. mydomainname.com/image title.jpg." (without the spaces AND using your personal URL).
That should get your images posted here.
The reason your computer showed the image when you first posted it is because your computer can read YOUR C: drive. Since it's not an 'online source,' others couldn't access it. Yet, you COULD see it.
Again, it happens to everyone, sooner or later.