Install VirtualBox
Download "VirtualBox-4.2.16-*-Win.exe" from Download VirtualBox.
Click on the saved file to start installation.
Click on the Next button.
Click on the Next button.
Click on the Next button.
Click on the Yes button.
Click on the Install button.
Wait for a few seconds.
Click on the Install button.
Click on the Install button for several times.
Click on the Finish button and done.