It's okay, I don't mind showing you how to do something.
So, lets say you're viewing your facebook page. You click on one of your photos and it brings up your "facebook photo viewer" or the black space around the photo you're viewing.
If you hit "Refresh" (Yes the circular button up top) in your browser bar, it will close that out, and bring you back to your photo the old way it use to let you view them on Facebook. (Stay calm, this will all make sense)
Once you are there, you can click on your picture with a right mouse click, and you'll get a set of options. One of them should be "Copy Image Location". Click that.
Then come here and in your reply, you can see the little "picture icon" at the top of the reply options. Click that, and paste the copied link into field and then hit "OK". It will post your picture in your response.
-Toby