You can change your AIM 6.1 Expressions on the AIM Expressions site.

On the AIM Expressions page, you can change your buddy icon, buddy wallpaper, buddy sound, and smileys. Clicking the Change button for any of those will take you to the "catalog" of Aim Expressions.

To change your AIM Expressions:

1. Go to AIM Expressions.
2. Sign in with your screen name and password.
3. Under the expression you want to change, click the Change button, then follow the on-screen prompts.