FOLLOW THESE STEPS
The first time you open Pidgin you will see the welcome window.
In the Add Account window, add the following:
* Protocol: XMPP
* Screen name or username: your Google Talk screen name without @gmail.com
* Server: gmail.com
* Password: If you want Pidgin to log in automatically, enter your
Google Talk password and check the Remember password box. The password
is stored unencrypted on your computer under the .purple directory in
your home folder, so you may not want Pidgin to remember your password
for security reasons.
Click the Advanced tab and add the following:
* Connect server: talk.google.com
Click Save and you’re done.
see the attached images for assistance.
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