OsCommerce First Data Global Gateway API integration

I needed someone who has significant experience of working with first data global gateway. I want to use that gateway directly on my site to accept the credit cards as payment options processed by first data global gateway.. I do NOT want to use the 'CRE Secure' module interface. I want to run straight through First Data. [login to view URL] .... I will escrow the amount and release only after job done successfully ... needs to be done within 1-2 days ... Completion time is extremely important. -------------------------------------------- ADDITIONAL INFORMATION -------------------------------------------- I want to make it clear that the solution will be ONSITE credit cards processing through first data . You will also integrate the facility for the user to pay by paypal - where there get re-directed to the Paypal site, log in and get returned back to our site again. Job will be considered complete only when it fulfills these steps ... Credit Card Payments 1) Order takes credits cards data and processed by first data gateway but on our site 2) Credit cards needs to be deducted properly and amount needs to be added to client account 3) The first date gateway return a payment successfull or unsuccessfull message. PayPal 1) user can click the pay by paypal button. 2) they get directed to login into paypal 3) funds are sent to our account 4) user is returned back to our site with a payment successfull or unsuccessfull message. Experience The project will be awarded to a developer who can provide at least 3 references to show that they have done this before.