How do I set up iChat for the first time?
1. Open iChat from the Dock or the Applications folder. A dialog opens to help you set up your account. Follow the instructions on the screen to configure iChat. If you don't have an account yet, click "Get an iChat Account" to sign up for a free one. This account will have an account name that ends with @mac.com and will work within the AIM network so you can use iChat to chat with your AIM buddies.
2. Once everything's configured, iChat opens and displays the Buddy List window. This is where you'll be able to see who is available to chat once you add people to your Buddy List. Your account appears at the top; your current status should show you as being "Available." Other iChat and AIM users who've added your account to their buddy list can view your name and status in their window.
3. If you want to change your status, click your status and choose a new one from the menu. You can choose one like Away or choose Custom and type your own customized status message for special occasions.
4. You may also see a green "phone" icon next to your iChat picture. If your computer has a built-in mic, or you have an external one plugged in, you may see a phone icon, which lets your fellow iChat buddies know that you're available to audio chat. If you have a FireWire or compatible USB camera connected to your computer, or a built-in one such as an iSight or DV camera, a movie camera icon displays to let other iChat users know that you're available to video chat.