You would need to login to your PayPal account: https://www.paypal.com/cgi-bin/webscr?cmd=_subscr-find&alias=sales%40swissmademarketing.comĀ 

Then go to your Profile and navigate to My Money. From here you can add the new payment account (credit card or bank) and designate it as your primary payment account. All future payments should then come from the new primary payment account you designated in PayPal.