Both AIM and Yahoo offer their own downloads on their site to get these programs on your computer. Yahoo has Go 2.0 and I'm not sure what AIM uses. Depending on your phone brand, it may already be installed on it. My Dash came with Yahoo, AIM and MSN messengers already installed. If your phone doesn't have them preloaded, then you'll need to go to the websites directly and download them to your phone that way.