[Yosemite Sam]

I click on "Post Reply", then scroll down to and click on "manage attachments", a box will come up, click "Browse" under "Upload File from your Computer", another box will come up that will say something like "File Upload" find your picture or the "link" to your picture, and double click on it and it will come up in the box next to "Browse" on the "manage attachments" box, then click on "Upload", then click "Submit post/reply" and you're done.

That sounds about as clear as mud, to me!