Windows

See .NET, XP, W2K, 98, 95, NT, 3.1

• WinToFlash, a tool to do installs from USB sticks.
• Getting Windows 2000 to run in 32MB RAM - yes, this is still relevant in 2015.
• Unattended Windows - a HOWTO for XP unattended installs.
• WPD - a way to disable most telemetry and clear out some of the fluff in Windows 10

To invert Windows scrolling, do the following:

• Find your pointing device’s hardware ID
• Control Panel, Mouse, Hardware, Properties, Details, Hardware IDs, VID...
• Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\HID
• Under that, change FlipFlopWheel and FlipFlopHScroll from 0 to 1 in all DeviceParameters entries

Apparently this can be done with PowerShell with something like:

Get-ItemProperty 
HKLM:\SYSTEM\CurrentControlSet\Enum\HID\*\*\Device` Parameters 
FlipFlopWheel -EA 0 | ForEach-Object { Set-ItemProperty $_.PSPath 
FlipFlopWheel 1 }

…but I haven’t tested it yet.