Perhaps reading the http://www.gamesas.com/index.php?/topic/724862-forum-rules-and-general-information/page__view__findpost__p__10470712 would help?
Or check my short-guide "adding Avatars on BSF for dummies":
- Go to Settings - Profile - Change Avatar
- Go to Photobucket (since you use that), select the picture you want to use as an avatar
- Hoover the arrow over the picture, then a menu with 4 links pops up.
- Click on the right of "Direct Link", and select with CTRL-C
- Insert the copied link into the box underneath "Enter a URL to an online avatar image" in the Change Avatar menu.
- Click on "Save Changes" button.
And there you have your new Avatar ready to be seen by all logged in BSF members.