Sheesh:
When you are looking at a forum index of messages (like when you have "general Lap Band support" forum open and are looking at the messages available, there is a button on the top left of the forum index. That button is "New Thread". Click it with your mouse :)
Aubrie:
When you are typing your message there is a button on the toolbar of the text box that looks kinda yellow and has a "mountain looking" thing on it (5 to the left on the bottom). Click it and it asks for the web location of the picture. You'll need to host your image and direct it to the picture. I generally use
ImageShack® - Image Hosting. Read that website's FAQ and it should let you know how to load your image. Once loaded, use its link it provides in the box asking for the web location on this forum previously mentioned.