Payment mode changes

I need to change my payment mode to 2co with discount coupon support(my last programmer did a terrific job here on freelancer; when you will see the code you will have the idea by looking at the comments so the code is clean and easy to understand where is waht). The order form and calculations for the pricing are already there; will need little customizations and I need dynamic link support for e.g: if the user is on the page "blue widgets" and clicks on order now; in the product select box(on the order form) "blue widgets" should be already selected. The order form was in working condition before I departed with my old payment system. I got the whole order form made for $35; you can check my employer projects lists. So please keep the bids sensible. This is a 2 hour job max if you dedicated 2 hours on my project that is. ======================================================= 1. If you have worked with 2checkout payment system will be preferred. 2. I need this asap so the quicker you can do this is better. ======================================================= Happy Bidding.