Trillianâ„¢ is a fully featured, stand-alone, skinnable chat client that supports AIM, ICQ, MSN, Yahoo Messenger, and IRC. It provides capabilities not possible with original network clients, while supporting standard features such as audio chat, file transfers, group chats, chat rooms, buddy icons, multiple simultaneous connections to the same network, server-side contact importing, typing notification, direct connection (AIM), proxy support, encrypted messaging (AIM/ICQ), SMS support, and privacy settings.
Installed Trillian and it work beautifully well and I am now able to chat with Yahoo, MSN and ICQ contacts with one single chat client. I am now also able to respond to more than one MSN or Yahoo or ICQ accounts with this single interface. The best of all, it has tab windows for multiple conversations.
Trillan is now part of Google Pack and can be downloaded via http://pack.google.com
So enjoy !!