Fresh Install

Windows XP Settings

Run -> gpedit.msc -> Computer Configuration -> Administrative Templates -> System -> Turn off Autoplay -> [Enabled]
Control Panel -> System -> Advanced -> Error Reporting -> Disable error reporting (But notify me when critical errors occur) -> [Checked]
Control Panel -> Power Options -> Advanced -> When I press the power button on my computer -> [Ask me what to do]
Control Panel -> Security Center -> Automatic Updates -> [Download updates for me, but let me choose when to install them]
Control Panel -> Security Center -> Change the way Security Center alerts me -> Virus Protection -> [Unchecked]
Internet Explorer -> Tools -> Internet Options -> General -> Browsing history -> Settings -> Check for newer versions of stored pages Every time I visit the webpage

Windows 7 Settings

Run -> gpedit.msc -> Computer Configuration -> Administrative Templates
-> Windows Components -> Autoplay Policies -> Turn off Autoplay -> [Enabled]
Run -> gpedit.msc -> User Configuration -> Administrative Templates
-> Windows Components -> Windows Explorer -> Turn off Windows + X hotkeys -> [Enabled]
-> Windows Components -> Windows Update -> Do not adjust default option to "Install Updates And Shut Down" -> [Enabled]

Display Calibration: cttune.exe and dccw.exe respectively, or run the applets from Control Panel.
http://elegantcode.com/2010/01/04/god-mode-easter-egg/