create trial version and registration

We have completed development on commercial software to be sold on the internet.? We require a coder to help us set up a system so that customers can (1) download a trial version of the software (not currently available), (2) create a registration key system to unlock trial software and allow full access, (3) create necessary web pages on our website so downloads and registrations can be completed online, and (4) outline instructions for use of that system. I will provide the winning bidder with necessary source code and access to our website. ## Deliverables The web pages do not need to be pretty, only functional.? I will modify the pages later to make them look nice.? This should be a fairly simple process for an experienced coder.