Hi Del,
This is how I do it:

First save the photo(s) to your desktop (or where you choose on your comp)

Then,

Click on the second icon from the RIGHT
(file no. 65 from the old board's gallery, not restored)
Now, at the top left of File Galleries box, click on the the third button 'Upload File'
(file no. 66 from the old board's gallery, not restored)
Now, in the Upload File box, click on the gray field left of the Browse button
(file no. 67 from the old board's gallery, not restored)
Select the file you want, click Open
Now click the Upload button in the lower left of the Upload File box
(file no. 68 from the old board's gallery, not restored)
The file shows up
(file no. 69 from the old board's gallery, not restored)
Now click the 'Additional Info' button on the right side of the Image
(file no. 70 from the old board's gallery, not restored)
And you see this
(file no. 71 from the old board's gallery, not restored)
There are four 'Links' , you want the second from the bottom, under the text 'You can display an image in a Wiki page using'

Highlight and copy that link, and paste it directly into your post.