Hm...I think once you have the registration code, they can't do anything anymore...
But then I don't feel comfortable with giving out my credit card number...and they don't accept paypal
Btw...I'm not sure yet if Starfury is better than Nova...I only played Nova for one day and Starfury might have grown a little old for me already...I'll play a little more Nova and Starfury and judge then
Both great games I'd say.