Reverse scroll direction on Windows 8 

Powershell commands:

 

Switching around from Windows and Mac OS x can be a bit confusing, so I decided to reverse the scroll direction on my Windows machines, so they would feel the same as under Mac OS x.
Here is how I did it:

  1. Find the Hardware ID for your mouse
    • Go to the mouse control panel
    • Select “Hardware” tab
    • Click “Properties” button
    • Select “Details” tab
    • From the drop-down list choose “Hardware IDs”
    • Save the VID*** entry ( e.g. VID_045E&PID_0039 )
  2. Find and change the corresponding configuration settings in the registry
    • Run regedit.exe (With administrator rights)
    • Navigate to the Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\HID
    • Find the Hardware ID entry of your mouse
    • Under all subkeys of the Hardware ID key look for the “DeviceParameters” key and change the “FlipFlopWheel” value from 0 to 1
  3. Making it work:
    • Unplug your mouse
    • Wait a few moments
    • Plug in your mouse

Source: http://www.vvse.com/blog/blog/2012/02/27/reverse-scrolling-on-windows-7/