Help Google Talk Help

Ok so I have an issue with Google Talk auto logging in after open the program. I went into settings and unchecked auto login. It's logged in to an email address I don't want to use. Is there a way for me to switch it to another one or be able to choose between the two of them? Is the auto login a glitch? By the way it's on my HTC Incredible. Any help is greatly appreciated.
 
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