Only admins can change the main pic.

If you have a better replacement pic, you can use the "Store Pictures on the Site" link right above the comment box. Make sure you have the "automatic resize" button clicked, then choose your file or if you already have it uploaded to another site, copy from remote address. Copy the link that pops up and put it in a comment. Make sure you put "Replacement Pic" with the photo so the admins know. We will change the pic for you.