If you want to send and receive instant messages without downloading and installing the the AIM software, you can log on to AIM using AIM Express.  Any computer with a web browser that is connected to the internet can load AIM Express without downloading or installing any software.  Click the AIM Express link below to begin.

AIM Express: http://www.aim.com/get_aim/express/aim_expr.adp

Click on the red "Start" button on the AIM Express web page to load the AIM Express interface.

Enter your AIM Screen Name and Password in the appropriate fields, and then click the "Sign On" button.  Your buddy list will load in a new window, and you will now be able to send and receive instant messages and use other limited AIM features.