Messenger Help & How-to
You can sign in to or out of Windows Live Messenger on the web from your Windows Live Hotmail account.
To sign in to Messenger on the web, point to Messenger at the top of the page, and then click Sign in to Messenger. Once you’re signed in, you can see which of your friends are online, and then can click their name to open a conversation window.
To sign out of Messenger on the web, point to your name in the upper right corner of the page, and then click Sign out of Messenger.
To change your online status in Messenger, point to your name in the upper right corner of the page, and then click Available, Busy, Away, or Appear offline.
Need more help? Ask your question in the Messenger forums
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Can't get to Messenger? Check service status