Nekee, when you make a post, just above the "Submit Reply" button is another button labeled "Browse.
Hit that button and you should get a "choose file" box showing your PC. In that box, find the picture and open it. It has to be less than 102 kb and in the form of one of the file extensions listed right under the "Browse" button.
Then hit the "submit reply" button and you're good to go.
I've heard that if you use the "Preview Reply" button, the picture won't post, but I'm not sure.
4 or 5 inches square should be big enough.
