The way I do it is put my pic on Photobucket. Then click on square underneath it and go to the bottom of the page and click on the "generate html code bar.

That brings up a page where I highlight the "thumbnails" or " pictures" for message boards. Then copy it. (sometimes it copies it when it's highlighted but not always).

Once it's copied to my clipboard, then I come to PT and start my thread. That way I don't have to flip back and forth between here and Photobucket.

I know very little about computers so if I can do it, I'm sure you can!!!
Good luck!!!