Josh,
Go this site:
http://tinyurl.com/47zoz
Upload your picture to the site following the directions on the page.
It will host the image for you. After you enter your picture ID in the text (Browse) box provided for it and click "host it". Another page will appear. Copy the line that says
"Direct link to image". Then go to the PSC forum page to add the picture to your forum thread.
First click the Image tag at the top right of the page- Img. Then paste in your direct link that you previously copied, then click on the Img tag again. Now click submit, and the picture will appear on the forum page..
Hope this helps..