Using the MSN network on a mobile phone without having Messenger installed
The fist step is to download eBuddy on your computer, selecting the phone model and then click the "JAR File".
Link:
http://www.getjar.com/products/10717/eBuddy
Once downloaded, upload it to your phone via Bluetooth, or via the USB cable ..
Install the software on your mobile. The procedure will differs depending on the models.
Once installed, you simply enter your MSN address and password.
Note that: The software is free itself, but there are communication costs.