in reply to Re^2: Perl for payment processing
in thread Perl for payment processing

Between this and your original post, it sounds like you've been given a task at your paid job, and before even doing any research or testing at all, you've come here to ask us to do your ground work for free (all without knowing anything about your business, processes or overall infrastructure).

Please take a look around the CPAN, test out some code, then perhaps ask about specific issues you may be having.