I'm confused by the 'nothing to click on in the box for typing the message' bit in your post. If you can type in a box you should be able to paste into it. For example, I've just entered that quote from your post by highlighting the text from your question, right-clicking and selecting copy, then right-clicking in the posting box and selecting paste. I can't quite understand the stage in that process where you're experiencing difficulties. Could you explain a bit more please?
Chris