Microsoft Messenger:mac

You can download a variety of Microsoft Messenger Mac versions although the features are very limited when compared to what MSN Messenger and Windows Live Messenger users have available under the Windows Platform, the greatest disappointed would have to have been that there was still no audio or video support as at v5.1.1 released 28 March 2006 (the one covered in article: v5.1.1 The Basics )

Downloads Currently Available....
Microsoft Messenger for Mac v6.0.3
Released: 21 August 2007
file name: Messenger603.dmg
file size: 9.48 MB
Processor: Mac OS X-compatible processor G3 or higher
Operating system: Mac OS X version 10.3.9 or later
Memory: 128 MB of RAM
Hard disk: 20 MB of hard disk space
Display: 1024 x 768

"Messenger for Mac 6.0.3 makes it easy to take advantage of the full power of instant messaging, and it is a Universal application built to run on both PowerPC-based and Intel-based Macs. If you encountered a sign-in issue with Messenger for Mac 6.0, you should upgrade to Messenger for Mac 6.0.3.
By using Messenger for Mac, users can:
• Chat with Yahoo! Messenger contacts
• Add a status message that your personal contacts can see
• Share what you are listening to in iTunes with your personal contacts
• Create, send, and receive custom emoticons with personal contacts
• Send and receive custom animated emoticons with personal contacts
• Search for conversation histories using Spotlight
• Check the spelling in your instant messages..."
Read more...

Microsoft Messenger for Mac v6.0.2
Released: 30 January 2007
file name: Messenger602.dmg
file size: 8.6 MB
Processor: Mac OS X-compatible processor G3 or higher
Operating system: Mac OS X version 10.3.9 or later
Memory: 128 MB of RAM
Hard disk: 20 MB of hard disk space
Display: 1024 x 768

Microsoft Messenger for Mac v5.1.1
Released: 28 March 2006
file name: Messenger511.dmg
file size: 6.73 MB
Processor: Mac OS X-compatible processor G3 or higher
Operating system: Mac OS X version 10.3 or later
Memory: 128 MB of RAM
Hard disk: 20 MB of hard disk space
Display: 1024 x 768

MSN Messenger for Mac v4.0.1
Released: 12 October 2004
file name: Messenger401.dmg.bin
file size: 4,169 KB
Processor: Power Mac G3, G4 or G4 Cube, G5; iMac; PowerBook G3 or G4; iBook; or eMac computer.
Operating system: Mac OS X version 10.2.8 or later (10.3.3 recommended)
Memory: 128 MB of RAM.
Hard disk: 12 MB of available hard disk space.
Programs: Internet browser required, such as Microsoft® Internet Explorer for Mac or Safari.

MSN Messenger for Mac v3.5
Released: 17 July 2003
file name: macmsgs.bin
file size: 3.2 MB
Processor: Macintosh PowerPC.
Operating system: Mac OS X version 10.1.3 or later.
Memory: 128 MB of RAM.
Hard disk: 8 MB of available hard disk space.
Programs: Internet browser required, such as Microsoft® Internet Explorer for Mac or Safari.

MSN Messenger for Mac version 2.5.1
Released: 26 July 2004
file name: macmsgs.bin
file size: 3.3 MB
Processor: Macintosh PowerPC.
Operating system: Mac OS 9.2.2.
Memory: 24 MB of RAM.
Hard disk: 3 MB of available hard disk space.
Programs: Microsoft Internet Explorer 5.1.7 or later or Netscape Navigator 4.0 or later.

Links:
Mactopia: http://www.microsoft.com/mac/
Privacy Policy: http://privacy.microsoft.com
Terms of Use: http://messenger.msn.com/help/Terms.aspx?mkt=en
Mactopia: Microsoft Messenger: http://www.microsoft.com/mac/default.aspx?pid=msnmessenger
Microsoft Passport Network, you need a Microsoft Passport to login to the Microsoft network
I'll be danged if I can find the Microsoft Messenger:mac support pages at Mactopia, the closest I got was at Mactopia General Support but it was all downhill from there as all roads seemed to lead to Windows, one useful resource I was able to locate was from within Messenger for Mac under Help > Help Topics which takes you to an online resource.