FAST need MAGENTO expert to make ustom job with payment processor

OB HAVE TO BE DONE VERY FAST! PROVIDE IN YOUR BID TIME AND PRICE! READ CAREFULLY BEFORE BIDDING! I am searching for high skilled magento professional who can install payment processor and do some custom job with this extension. This is situation: My site A got banned in payment processor, so I created site B and it got approved to sell. All customers come to site A, so I need to customers able to pay via this payment processor. What should be done? When customer place order on site A, he should be redirected to site B and instantly to payment processor payment page. After use pays he should be redirected to site B and instantly to site A. Site B should not be visible to the customer. Site A is magento. With site B you can do anything you want, you can clone site A on it or anything else. IF you have better IDEA, then I want to hear it, for me is most important to make it working. Rules: 1. Payment processor should not see site A (as if he see traffic from site A then site B got blocked too) 2. Would be good if users will not see site B. There can be used very fast redirects on something like this. User should think he got redirected to payment processor from site A. 3. After payment customer should be returned to thank you page on site A, but it should be done with redirect via site B.