I much prefer TweakUI to the old reg hack method for two reasons.
1. Tweak hides the password in a hidden are of the reg.
2. Even if you override the autologon at the keyboard, TweakUI still remembers the password at the next boot while the reg hack does not.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.