2)Right click on shortcut and go to its properties.
3)Go to shortcut and then go to target.
4) In the field 'type the location of the item' paste the following source...
c:\program files\google\google talk\googletalk.exe" /nomutex
5)If this loction doesn't work, then locate manually by clicking on
browse option. Then go to c: -> program file -> google-> google talk->
Googletalk.exe
and then paste /nomutex in the end of manually located source.there is a space between the " and/
6)Finished. Now you can run multiple Google Talk.