In order for the icon to download automatically, AIM must be running on your computer and you must be signed in using the screenname for which you wish to use the icon. Download AIM if you do not already have it installed.
You cannot download icons with old versions AIM Triton. Please upgrade to the newest version from AIM.com. Learn more about Triton.
After changing your icon, it will take a few minutes for the change to appear after starting a conversation with someone. If it doesn't appear after 10 minutes, try restarting AIM or installing the icon again.