If you hit post reply instead of the quick reply it will bring up the typing box, then look for the paper clip icon at the top of that box and click it, there you can add an attatchment. When the window pops up, browse your computer and find the one you want. When you choose it, click upload in the same box. There you will see the name of the file listed under the browse bar. Close the box, type your caption and hit post. Sorry if it sounds complicated, it took me a bit to figure it out as well. Or you can copy the code off of photobucket if you use it.