Credit Card Validation

From: Vivek Srivastav (vs_works@hotmail.com)
Date: 08/27/02 

From: "Vivek Srivastav" <vs_works@hotmail.com>
Date: Tue, 27 Aug 2002 04:07:22 -0400

Hi,
I want to develop e-commerce capability within a website. I want to know
How I can validate a credit card. Is that i will need to subscribe to some service
for validation? I want to do it for the learning value and can't invest money in it, is there some default CC Number that can be used for varification? Is there a toolkit which provides a default service, etc.
Where can I find more information.
I would really appreciate if someone can point me in the right direction.
Thanks and Regards
vss

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