The first thing you need to do is plug in you main Firewing port. Windows will then display the "Installing Device Driver Software" notification. After a little time "Device Driver Software was not successfully installed" notification will be displayed. Don't panic, this is perfectly normal.
To install the driver, click on the windows start menu and right click on "Computer", then select "Properties". This will start the "view basic information about your computer" window. Click on the "Device Manager" link, which can be found on the left hand side of this window.
Scroll down to the "Other Devices" section. Right click on the "Firewing Communications Port" and select "Update Driver Software". Ensure that you click on the "Browse my computer for driver software" option.
You now need to point the wizard to the folder that contains the "FirewingCDC.inf" file. If you have installed the Firewing IDE, you can find it located in the Firewing IDE installation folder under "USB Driver". Alternatively, you can download the *.inf file from here. Press the "Next" button to continue.
When the "Windows cannot verify the publisher of this driver software" screen appears, click on the "Install the driver software anyway" option. Note that Firewing uses the USB to serial driver provided by Microsoft themselves, so it is safe to use.
Windows will then proceed to install the driver software...
and display the "successfully updated" window when finished. Press close to complete the installation.
At this point, it may be worthwhile identifying on which port the board is installed (useful when you want to connect to the main board using a terminal program or the like). This information will now be displayed to the right of the "Firewing Communications Port" test in the device manager window.