Delphi 4 Trial software

I have a full Software developed in Delphi 4, I need to make this software become a trial verison of 30 days, and after 30 days give the option to buy it. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. 4) Compiled with installation. ## Platform the programme must work on every window platform.