Just realised that I have mis-understood your post.
Well, I have had a hard week, and brain is not up to speed yet!!
The easiest way is to put the photo on the site, then open it to the large view. Under the image and above the EXIF info, there is, on the left, the location on the site, and to the right there is a 'copy to clipboard' button. Press this button.
Go to the section you want to post the image in, then click on 'new thread' (or you can also insert an image in a 'reply' in the same way).
Type in your excuses
, then click on the image button above the text entry box you are typing in. This will open a seperate dialogue box where you can paste the previously copied image location.
You can also enter a url from an on-line image store, but I think the image spec will have to comply in terms of size.
All you have to do then is to brace yourself!!