Convert PHP scripts into Drupal Module

I have a php script I have purchased from AlstraSoft which is an autoresponder system. I need this script to be encapsulated into a drupal module so that the templating and database functions are thru the drupal system. I also want this system to be accessible from the user login, so that the users who are accessing the autoresponder can manage their responders from the site as well. This should be fairly simple, as the script is all complete, however, I am not sure what it takes to put it into the proper format. The project will be complete when I am able to install the new module into drupal, and access all functions as intended. The module will integrate seamlessly into the drupal system as any other module might. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Drupal 4.7.4 PHP, MySql For viewing on Internet Explorer and Firefox