How do you make a master account for playstation.com

How do you make a master account for playstation.com? i try to make a new account but everytime i get to where u have to put ur id in, i cant because i dont have a master account. please help! Video & Online Games - 2 Answers Random Answers, Critics, Comments, Opinions : 1 a master account is when you have a ps3 live account that is it. then you inter in your gamer tag it just has to relate you to the system. 2 say you are over 18 and make an account