How do i change the debit/credit card i am using to deposit money using echecks on PokerStars?

I have a new credit card and i want to deposit some money in my PokerStars account. When I go to cashier and click deposit using the instant echeck option, my (old) card info from prior deposits is already entered and unchangeable. Any help?|||You have to e-mail them to get this changed. Same thing happened to me.