Keep in mind that your server has to be PCI-certified (see http://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Standard http://en.wikipedia.org/wik

Keep in mind that your server has to be PCI-certified (see http://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Standard http://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Secu...) in order to accept credit cards such as Visa.