This tutorial will make mIRC act a bit like MSN. When the channel you are in (#RSF) receives a message, mIRC in the taskbar. Just like MSN Messenger would.
When mIRC is opened, press ALT+O. This will open your option settings.
Select IRC, a drop down menu will appear.
Select "Options" and proceed to tick flash on channel message and flash on query message if you decide to do so. (query is a like PM)