iChat Icon   Switching between multiple instant message accounts

If other people use your computer, you can create a separate Mac OS X user account for each person. When users log in to Mac OS X, they'll automatically use their own iChat screen names. For help with setting up accounts on Mac OS X, choose Help > Mac Help in the Finder.

If you have multiple screen names that you want to use with iChat, you can switch between them using iChat Preferences.

1.Choose iChat > Preferences, then click Accounts.
2.Choose a screen name from the AIM Screen Name pop-up menu.

You can also use the AIM Screen Name pop-up menu to create a new .Mac account or clear the menu. Clearing the menu removes all accounts except the one you are currently using.