我认为这不是发布此问题的正确论坛.要更改密码，请参阅链接 http://support.microsoft.com/kb/935255  .我猜您不能更改用户ID.

I think this is not the correct forum to post this question. However to change the password see the link http://support.microsoft.com/kb/935255 . I guess you can't change the User ID.