[PHP] how to use class

[Jack]

Hi all
I am new to php class, basically never use class before. Now I try to use a credit 
card class from Zend, the class name is credit_card.pkg. How do I create the object 
for this type of class and how do I call the functions from this class to use?
Jack
[EMAIL PROTECTED]
"Love your enemies, it will drive them nuts"