Do you have multiple Google Accounts and at times need to login at more than one of them on Google Talk? Here I will tell you a simple trick which would help you do it easily.
To begin with let me tell you that I am not asking you to download any cracks and we will just be working with a simple command line parameter on the shortcut of Google Talk.
Working with Shortcut
Right click on the Google Talk shortcut. On the right click contextual menu, click on Properties. Go to Shortcut tab on Google Talk Properties window. On the Target textbox, add in the /nomutex to the end of the line so that it looks like below (or you can simply copy and paste the below syntax and replace the original).
Now you can open any number of Google Talks just by clicking the shortcut again and again.
Using Hex Editor
If you have hex editor, you can act like a hacker and modify the bits in Google Talk program so that it will always allow multiple instances of GTalk to be launched whether the /nomutex switch is specified or not.
Launch hex editor and open googletalk.exe, then search for the following patterns in the hex editor: