Paypal Adaptive Payments in .NET project

We developed a website very much like [login to view URL] where members can sell items and buyers can bid on the items posted up for sale. Buyer who placed the highest bid at the time of item expiration will be declared winner for the product. Now buyer will need to pay the seller via Paypal. Our site will also assess a nominal charge on the transaction as incentive. In the transaction described above, all the accounts to be credited are of Paypal type. You will help us implement Adaptive Paypal payment since we pay two Paypal accounts, 1. Buyer; 2. Our site. We request freelancers here to place a bid only if you have prior experience in deploying Paypal adaptive payments.