Yes, you can transfer the licence to another. Firstly, you need to remove the software from your desktop. You should do this using the Windows uninstall feature on the Start Menu at Settings | Control Panel | Add/Remove Programs. Then select the application and proceed with the uninstallation.
You will then be able to install the software on new PC and activate it.
If you need another copy of the software, please write to firstname.lastname@example.org with your order number.