How do you get Messages to go online automatically during login? How do I get Messages to go online when I start my Mac? It does start automatically but doesn't go online automatically. Any idea how?

PS:
I should mention that I am not talking about iMessage but the Messages chat application that lets you interface with gtalk, yahoo messenger etc.
Two ways to do this.

First, if you have messages set up in notifications, then you'll get your messages even if Messages is closed (and you can send messages from the notifications as well).

Second, if you actually want to launch Messages at login, add Messages to your Login Items list in the User &amp; Groups system preference.