Register a Username and Password on the Register page

On the Download page, enter your Boundless Planet Username and Password

Click on: "Download the Game Client"

Click on either "Open" or "Save" (the former will start the install process immediately upon successful download, the latter will require you to double-click on the downloaded file once it is successfully downloaded before it starts installing)

A WinZip Self-Extactor window will appear - Check the available boxes, and click "Unzip" (this will take a minute to complete)

Another WinZip Self-Extractor will appear hailing a successful unzipping - click "OK"

Congratulations, BoundlessPlanet is now installed.  A shortcut has been added to your Start menu.