Kally,
due to the way you ask your question, i suggest that you are not
very much into the IM stuff. So to help you out a bit more then
the answer before:

pidgin is an IM that can "communicate" to a lot of other IM
systems like MSN, AOL, Google Talk, Yahoo etc.
You need to start pidgin and there add your MSN profile.
From that point on, Pidgin will be a replacement so that you do
not need to install MSN, but use Pidgin.

The advantage of it: if you also use ICQ, Yahoo, AOL or any other
chat tool, you do not need to start all of them when you turn
your computer/device on - you only need to start pidgin!

Hope that was some how of help and about your questions
quote: ain't that the reason why forums do exist

Greetings from Hamburg,
Carlos
http://www.mojocafe.net