The Microsoft P2P IM application, unfortunately 3 Degrees never made it past beta however some people continue to use it and this page will provide information & screenshots. There is a download link at the end of this page
To use Threedegrees, users must be running Windows XP with Service Pack 1, the peer-to-peer update and MSN Messenger 5 installed on their computers. The software allows people to create groups, in which up to 10 people can participate in the same instant messaging session. Group members also can share animation and photos or listen to music.
Core to Threedegrees is the group aspect of instant messaging. While each group is limited to 10 members, one person could participate in a dozen different groups or more, instant messaging or participating in activities in any or all of them.
Group members can create playlists of 60 songs, or the equivalent of five or six CDs. The songs are played from the participant’s hard drive, rather than being illegally swapped. Songs can be in Windows Media Audio, MP3 or WAV formats. Another feature, known as Winks, lets one user send animation to everyone in the group. This feature pioneered the winks found in MSN 7 & 7.5
If your interested in using 3 degrees you can Download Here