"IM Remote is an AOL AIM plugin that lets you share your desktop with a friend via AIM. This plugin can be extremely useful when a friend or relative needs help with their computer or when you have to work remotely with a friend or co-worker, avoiding the complexity to setup a secure VNC server."
How to get it?
1. You can get this plugin here
2. Close AIM
3. Execute the installer
4. Start AIM
5. In order to share your desktop, IM Remote must be installed in your friend computer.
Full instructions for how to use IM Remote are available on the download page.