Hi Guys,
The payment gateway i am using in my part of the world is not supported by VM..So I will be the first one customizing it...If I am successful, I will post the payment module files here to help others.
But in the mean time I NEED HELP...i am no programmer...
I have spent until now about 50 hours...to figuring out how to customize the payment module for my payment gateway (Commerce Payment)...thanks to jaguar helping me to point me in to this thread....i am almost there...but i got this error about
Failure in Processing the Payment (MD5 Check Failure)
What i did
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1. I created a payment module from scratch based on the little knowledge i have by copying one of the payment module which is "paypal related" and rename it to my own.
2. Done the ps_XX.php and ps_XX.cfg.php files accordingly. Works perfect.
3. Added a Payment Extra Info where I POST the information to my payment Gateway
4. The Return URL is pointed to my checkout.XX_result.php.
5. I have modified checkout.XX_result.php base on checkout.dandomain_result.php.
6. I get this error "Failure in Processing the Payment (MD5 Check Failure)"
Environment of testing
==============
I am using JSAS local development to test my script connecting to Commerce Payment using internet. Is it the reason

What's Next
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If I am successfully seeing a Success Page, order_status updated...do I still need a notify.php file

I really want to get to the bottom of this....
Questions
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I really like the workflow to have the Button to ask my customer to "Click HERE to COMPLETE ORDER in our SECURE PAYMENT SERVER"...currently i dont have this page...what can i do ?
Sorry to have so many questions.....thanks guys !