>Where ca I find the validation for credit card.
>I like to validate at the data entry the credit card.
>Is there a web site with all of the informations.

It is unpossible for you and me. this rights has only banks and organizasion issued credit card.
We can make only validation request to bank/credit card organization/ site or network.
They give a protocol and usualy we make a COM or ActiveX for that.