Some AVS Forum users have figured out how to make PiGS run on Windows. Even better, they figured out how to make a packaged zip installer. Any questions about making PiGS work on windows will need to be directed at the PiGS AVS Forum (check out Post 368) but below is a short Video of a Windows 7 install and DVR+ setup.
The next Post ‘About Static IP’s has a video that shows how to fix the IP of your DVR and PC.
PiGS V1.23 Windows Zip Installer (Jan 7, 2021)
You might be successful by just following the video below, but here are Detailed Windows Install Instructions