The procedure for installing on a second computer depends upon where you bought it. If you purchased the game directly from LDW, the easiest way to reinstall it, or install it on a different computer in your household, is to download and install the free trial, and then enter the activation information that was contained in your purchase confirmation email. You can get the free trial of Plant Tycoon from
here.
If the computer you wish to install the game on does not have an Internet connection, you can put the downloaded file on a CD or portable storage device and use that to install the game on the desired computer.
If you purchased the game from Big Fish Games, please check their policies and procedures, since other game distributors have varying policies with respect to installation and activation.