complete a commercegate integration. + callback server

need a programmer that has experience with CommerceGate and that can implement the solution within a few hours. the integration work is almost completed. i just need you to script the callback server properly so that it is functional. - integration of callback server (send some infos about the processed transactions . Those inputs must update my users database , so the site will know which member has bought what package and update it online. The job must be completed in a few hours , please bid only if you can deliver this project very fast! If the project goes well it can be expected more work.