1) Click on 'Img' in the 'toolbox' and will appear with a flashing cursor in the centre.
2) Go to the webpage that has the picture you wish to add and copy the URL (see HOW TO COPY PASTE LINKS)
3) With the cursor in between Paste the URL..(Right CLICK and choose PASTE)
4) Your picture will appear in your post.
I need to ask here why there does not seem to be a way of uploading from our pc and how do you post a pic that is on a webpage with other pics?..How do you post from Photobucket? It doesn't work for me!