Avatars (the little picture by your name)
Or better yet upload a picture of your bull, brand, ranch logo or your own picture. Uploaded avatars can be no larger than 100 pixels high or wide and maximum 9 kB file size.
If you don't have photo editing software you can use the free online resizer http://www.resize-photos.com/. Just Browse to the picture on your computer and Upload. Change Width to 100 and Quality to around 10% and Download image to your computer. If it still won't upload to the Board make both settings even smaller.
Registered users can change their avatar anytime they wish. Any change is applied to all your posts.
If you have a problem, let me know.