Find that code at the website where your pictures are! On my computer when I point at something with the mouse and then press the RIGHThand mouse button this little menu pops up that lets me copy the image code that has been highlighted. You may have to do that as well. On most computers it will highlight when you left or right click on it. when you come to HMEM and make a reply or start a topic just get a clear line and paste in what you copied. Get that same menu back up you used to copy it and it will have "paste" available for selection.
It really is simpler to do than it is to describe I think.