IMTiger is a powerful add-on for MSN Messenger. It turn MSN Messenger into a multi-protocol client. With IMTiger, Your AIM/ICQ buddy would be listed in MSN Messenger's contact list and you can talk with them.
The main update with this beta release is support for MSN Messenger 7.0
To view a list of features click the "Read More" link.
Download: Download IMTiger Beta 2 (Build 0.02) ~ 1.8MB