How to edit/delete Google Talk custom messages
Google Talk stored all of your custom messages that you have entered in a file in your user profile directory.
The file is located at “%USERPROFILE%\Local Settings\Application Data\Google\Google Talk\status”
Inside you will find a file named in the format [userid]-history.txt.
So if your Gmail account is John.Dow@gmail.com the filename will be john.dow_gmail.com-history.txt (besides, there is usually only one file there anyway ;-) ).
The file format is very easy. It start with a first line which has the character “1” in it.
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