Simply follow the instructions to add the Stop Global Warming buddy icon to your Instant Messenger application.
PC USers: Simply click the icon to install it.
Open AIM, and click on the icon you would like to install.
The AIM Preferences window will appear.
Select Buddy Icons from the category options on the left.
Click on the Reveal Icons Folder button.
Click, hold and drag the icon you want into the Shared Buddy Icons folder
Click OK on your preferences window, this will close the window.
Repeat steps 1-3 then select your new icon from the list underneath My Buddy Icon