Running multiple instances of GTalk (Google Chat Messenger)

Steps to enabling multiple instances of GTalk:
1. Create or locate a shortcut to your installed GTalk executable
file. 
By default, the executable file is
              "C:\Program Files\Google\Google Talk\googletalk.exe"

2. To Target value of this shortcut, add
               /nomutex
[Method to implement step 2.:-
shortcut file --> right-click --> Properties --> Target] 


See the screenshot below:

Now every time you launch GTalk with this shortcut, you get a new
instance of GTalk launched. Sign in with a different email id on
the same computer and enjoy GTalking! :-)