I am not smartzeus768679? that is the name associated with my username? how did someone do this?
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When setting up your microsoft account, you may have accidentally created this profile on the computer, and that is the randomly generated name.
You need a second microsoft account and email just to bump this profile off of your proper email, so you could then join live from your console and connect to the proper email.
You can create a new Microsoft Account at
http://signup.live.com then on the console sign in with your current profile and then do Settings | Account | Account Security | Change Microsoft Account