Thanks Jimmy.
I found this reference regarding a process step called "AUTHONLY". The author said:
"Do not store credit card numbers on your own server! If you need to collect credit card data from your customers, only to charge the card later use the AUTHONLY. That way you pass all credit card and personal information of your customer right on to your Merchant Account keeping your customers information safe and secure. You can then bill the credit card at a later date through your web based control panel for your merchant account."
Question: Is this type of transaction possible with PS3, or is this done on the Payment Gateway end, or merchant account end, or all three?