You'll need to install autohotkey on Windows: http://www.autohotkey.com/
Then copy this script to your local machine somewhere: (feel free to modify to your heart's content by the way)
You'll then most likely want the script to start on startup. You'll need to create a shortcut to the script above here (might need to run as admin for some functions):
(if the above path does not work, play around with adding a "\Roaming\" right after %appdata%)
Notes:Unfortunately the experience isn't perfect. The most jarring difference is the Win+Tab key (or cmd+Tab key combo) can not be overridden on Windows to simulate the Alt+Tab functionality. This appears to be a security restriction. I did find a couple sites that said you can get it to work, but you have to compile the AHK script and sign it and elevate it to have special privileges on the machine... and I just wasn't going to do all that. Hopefully this will be better in Windows 10.
Special thanks to: https://github.com/stroebjo/autohotkey-windows-mac-keyboard this was the script I started with and modified.
Hope this helps,