Thanks for your support! The quickest and easiest way to register is online by credit card. We are using PayPals's trusted payment processing service to process our payments, so you can be sure that your transaction will be secure. To purchase a registration number for X Ball online, just follow the link for your operating system below. You will receive your registration number within minutes of completing this process.   Register X Ball for Macintosh online by credit card   Register X Ball for Windows online by credit card It is also possible to purchase a registration number by sending a check to Crystal Pier software, athough we can not give you your registration number until we receive your check in the mail, and you will need to pay the postal fee. However, if you would rather take this route, email us and we will let you know where to send your check. Upgrade Pricing If you are a registered X Ball 1.x user, you can upgrade to X Ball 2 for $11.95. Enter your original registration number below and click upgrade. If you lost your restiration number, email us with the full name and email address which you registered under and we will be happy to look it up for you.