I made a game, and I want to port it to the Playstation 3. What do I need in terms of hardware, money, licenses and such?
Are you interested in developing for PSN, or as a retail game that people buy in stores?
To develop for PSN, you'll need to start by contacting Sony and becoming a licensed developer. To develop a retail game, you'll most likely need to contact a publisher who will distribute the game.
In either case, be prepared to demo the game and your company to either Sony or a publisher for approval.
Once you've made this first step, Sony or the publisher will be able to help answer all of your questions regarding getting development hardware, costs, etc.