Computers can be a pain ...
I downloaded a copy of your image, which seems to be only 100x76 pixels, and followed the
advice on How do I attach an image in the Our Most Frequently Asked Questions
postings in the Forum FAQ & Help Topics forum.
After you have your image resized, go to the bottom of your post and click More Reply Options,
then to Attach Files at the bottom of the page. Click Choose File button. Navigate to your photo
on your computer. Choose the file and click the Attach This File button. You will see a small thumbnail
of your image on the left and an Add to Post button on your right. Click the Add to Post button.
Note that the Choose file button now seems to be called Browse
... following this procedure gave
oldladypic.jpg 2.87KB 1 downloads
Which does include a "thumbnail" of your picture in the posting, which does open-up to "full-size" when
you click on it. Unfortunately the full-size image is only 100x76 pixels so it doesn't really change size
PS Tried the same procedure with a picture from another thread, as a check on my logic.
anotherpic.jpg 90.06KB 0 downloads
Seems to be OK. The Image as downloaded was 640x477 pixels, and expands nicely.