Now, I use this all the time. it is very handy, and really easy to use, looks nice to. it is called Digsby. It is very easy to use. all you have to do is register your digs by account (which is completely free), then, open Digsby, type in your Digsby account, and then start adding your aim, Yahoo, Gmail, MSN and more accounts!
I use it all of the time. It is SO easy to use, and looks really nice to!