Moved to appropriate area...
The picture next to your posts is called an avatar. It's easily changed. Just remember you can not use animated gifs. Also, the image needs to be saved on your computer before you can use it.
Near the upper left corner of any page on the site is your control panel access. Click the word "Settings" and select "Edit Avatar" from the drop down menu...
This will take you to your Mobile Nations Passport profile information. Select "Change Avatar."
Upload the picture you want to use. It will appear on any of the Mobile Nations sites. The function even remembers al the avatars you've used in the past to make changing back easy.