Tennis 3000 must be installed on your computer (if you
do not have it, download it !). Then, follow the instructions
given by the registration menu bar into the software (Registration/Register).
You will be able to buy your license either on a secure payment
platform with your credit card or by postal mail (postal money
order in Euros). The secure payment platform, Paypal,
allows you to receive automatically your license number within
24 hours by e-mail.