In the Help Menu in the application, there will be a link for 'Deactivate'
Or if you uninstall, you will get a checkbox to deactivate in the uninstaller.
OK that did not work,now how do I deactivate the program
Go to My Adobe at the top of this page, then follow the link to My Products.
You'll see your list of activated products there as well as a link to Customer Service, who will help you.