I've already done it for PoS so if you need demo I can give you right away & hence keeping bid to lowest possible on this website. Award me only when you're sure that it is hard one for other bidders.
Relevant Skills and Experience
VF9, PC, PCCharge, PAX, XML, Web Services
Proposed Milestones
$1 USD - Free Demo
$50 USD - Payment Gateway setup/configuration
$100 USD - VF9 source code framework setup
$50 USD - Integration of Payment Gateway with VF9
$49 USD - Fully Functional Demo + Feedback incorporated.
I hope it is from scratch you want but just to clarify, whether any work is done on it so far?