payment processing

[nabeel]

Hey everyone,

I've spent a few hours looking for this...but, where are the orders actually processed? I mean, where is the code where the credit card is actually charged? I'm adding a new module where the information is actually sent to a custom app, and that does the processing, and returns whether it's successful or not, adn I want to know where the code is for that. I've written the "front-end" part, but need to do this part.

Any ideas?

Thanks alot!
Nabeel