There are many ways to do it, but all of them depend on storing something on the server. To do that has nothing to do with using Dreamweaver or not, it depends on how your server is configured and what scripting languages and databases you have available to you. Typically, these days, you would use PHP and simply increment a counter in a database or even in a simple text file on your server’s file path.

Once you have your server configured right, learn PHP or whatever language, the rest is really simple. You could use Ajax, so that if the user ticks the box, it updates the display without a page refresh, but that is all the easy stuff once you have the initial server set up.