All you need to do is-
- Right click on the Start Menu shortcut of Google Talk and select Properties.
- In the Properties window, select the shortcut tab.
- At the end of your Target address, add /nomutex
- Click Apply.
That's it!
Told you, this was too basic to be discussed.. :D
So next time you click on that shortcut, you get a new instance of Gtalk and you can sign in with a different account.. :)
Happy Chatting... :)
Ciao!