How do I configure GAIM for Google Talk?
Once you download GAIM, you'll need to configure your client to connect to the Google Talk service. Here's how:
Open GAIM.
Click 'Accounts' at the bottom of the login page.

Click 'Add' after the 'Accounts' window opens.

Enter the following information in the 'Add Account' window:
Protocol: Jabber
Screen Name: enter your full Gmail username (everything before '@gmail.com')
Server: gmail.com
Password: we suggest leaving this field blank for increased security, but if you'd like to log in automatically, enter your Gmail password
Alias: leave this field blank
Remember password: check the box if you'd like GAIM to remember your password (you won't be prompted to enter it each time you log in, if you select this option)
Auto-login: check the box if you'd like to connect to the Google Talk service each time you use GAIM

Click the '+' next to 'Show more options.'
Enter the following information in the section that appears:
Jabber Options: Check the box next to 'Use TLS if available,' and leave the other boxes unchecked.
Port: 5222
Connect server: talk.google.com
Proxy type: Use Global Proxy Settings

Click 'Save.'
Congratulations! You are now ready to connect to the Google Talk service using GAIM.
Have questions about GAIM? Learn from the experts! Check out GAIM's FAQs. The Google Talk Team can only assist you in configuring your client to work with the Talk service.
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中文提示:
对于一般已使用gaim的用户来说,首先点击“工具”--->“账户”
在弹出的对话框里选择“添加”
在弹出的对话框里协议一项选择“Jabber”
在用户名里填上你的gmail账号。
服务器选择“gmail.com”。
密码填上你gmail的密码。
点“显示主要选项”前面的下拉菜单
出现新的选项。
其余的不变,在“连接服务器”一项填写“talk.google.com”.
点“保存”。成功了。
gtalk是google公司刚推出的聊天软件,类似于MSN。