Installing Iguana under windows is straightforward with the windows installer.
You will:
Download a iguana_setup.exe file from:
You’ll need to run it as administrator
The operating system will prompt you. Click YES when you see the prompt asking you this.
If a firewall warning may come up - just click Allow access
The installer will open up your web browser and guide you through a series of steps to install Iguana.
That should do it!