Often people ask me if it is possible to record and save the live voice stream of a chat partner on MSN Messenger. The answer is: yes. Download Freebird's vEmotion with recorder, an excellent program to record a IM conversations. It is able to voice conversations on Msn, Skype, Gtalk, AIM and QQ (I don't know this IM).

vEmotion website(http://www.voiceemotion.com):

Install the program and startup it. In the user interface, press down the last button on the toolbar to enable recording. Then start a voice conversation with your friends. The converation is recorded automatically. As you finish the converation, a new record is saved.

Is it simple? yes? Also I have tried this program with AIM triton. It turned out to be a nice tool.
here is the link:http://www.mediafire.com/?zjtnggmkmwj