Sorry for the misleading ideas.
Closer inspection of your pic and I am still no help.
As for uploading pics:
One make sure they are the correct size
On the reply to a thread page, scroll down to the "Manage attachments" (Pics must be one of these: bmp doc gif jpe jpeg jpg pdf png psd txt zip)
and click there.
Should open a "browse" window
click on browse, navigate to your pic files, select the pic to post, then click on "open".
That should attach your pic to your post.