escrow

I need a provider with experience in creating a escrow payment system which can be integrated with our current system. I need it so that a user can transfer money, put it into an escrow, and then release it to another member. I would like to receive demos from providers who can show experience in developing escrow payment systems. Additional information submitted: 06/24/2008 at 16:50 EDT: Task 1 - Buying/Selling: User A lists item, User B purchases item, User B adds funds to his account, then places the fund into escrow. Once the item is received by User B, user B releases the funds to user A Task 2 - Trading: User A lists item, however decides to require a "Security Deposit" of $25. User B and User A agree upon the trade. Both Users deposit $25 that goes into a "escrow" account. Once User A and User B are satisfied with the trade, they will release the funds back to each other. The script must include the same features as GAF's - Deposit Money, New Escrow Payment, and a Withdraw Money feature.